Updated on 2024/10/19

写真a

 
HAYASHI Masahito
 
Organization
Graduate School of Mathematics Division of Mathematics Computational Mathematics Professor
Graduate School
Graduate School of Mathematics
Undergraduate School
School of Science
Title
Professor
External link

Degree 1

  1. 博士(理学) ( 1999.3   京都大学 ) 

Research Interests 2

  1. Quantum Information

  2. 量子情報

Research Areas 1

  1. Informatics / Theory of informatics

Research History 2

  1. Visiting Research Professor, Centre for Quantum Technologies, National University of Singapore

    2012.9

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    Country:Singapore

  2. Tohoku University Graduate School of Information Sciences, Department of Computer and Mathematical Sciences   Associate professor

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Education 1

  1. Kyoto University

    - 1999

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    Country: Japan

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Professional Memberships 7

  1. Institute of Mathematical Statistics   fellow

    2021.5

  2. IEEE   Fellow

    2006

  3. Asia Pacic Artificial Intelligence Association   fellow

    2022.6

  4. 日本数学会

  5. 電子情報通信学会

  6. 日本物理学会

  7. 量子情報技術時限付専門委員会

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Committee Memberships 1

  1.   ICQNM 2012, The Sixth International Conference on Quantum, Nano and Micro Technologies Program Committee member  

    2012   

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Awards 7

  1. 2011 IEEE Information Theory Society Paper Award

    2011.8   IEEE Information Theory Society  

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    Country:Japan

  2. 第24回日本IBM科学賞コンピューター・サイエンス分野

    2010.11   日本アイ・ビー・エム株式会社  

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    Country:Japan

  3. Fellow of Institute of Mathematical Statistics

    2022.4   Institute of Mathematical Statistics   Fellow of Institute of Mathematical Statistics

    Masahito Hayashi

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    Award type:Award from international society, conference, symposium, etc.  Country:United States

    For deep and influential contributions to quantum statistics and quantum information theory

  4. IEEE Fellow

    2017.1   contributions to Shannon theory, information-theoretic security, and quantum information theory

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    Country:United States

  5. 日本学術振興会賞

    2016.1   日本学術振興会    有限符号長の情報理論及び量子情報理論の研究

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    Country:Japan

  6. 日本学士院学術奨励賞

    2016.1   日本学士院   有限符号長の情報理論及び量子情報理論の研究

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    Country:Japan

  7. Fellow of Asia Pacic Artificial Intelligence Association

    2022.6   Asia Pacic Artificial Intelligence Association   Fellow of Asia Pacic Artificial Intelligence Association

    Masahito Hayashi

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    Award type:Award from international society, conference, symposium, etc.  Country:China

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Papers 384

  1. Quantum state estimation with nuisance parameters (vol 53, 453001, 2020) Invited Reviewed International coauthorship

    Suzuki, J; Yang, YX; Hayashi, M

    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL   Vol. 57 ( 12 )   2024.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1751-8121/ad2f10

    Web of Science

  2. Tight Cramer-Rao type bounds for multiparameter quantum metrology through conic programming Reviewed International coauthorship

    Hayashi, M; Ouyang, YK

    QUANTUM   Vol. 7   2023.8

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    Web of Science

  3. Tight Exponential Analysis for Smoothing the Max-Relative Entropy and for Quantum Privacy Amplification Reviewed International coauthorship International journal

    K. Li, Y. Yao, and M. Hayashi

    IEEE Transactions on Information Theory   Vol. 69 ( 3 ) page: 1680 - 1694   2023.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE  

  4. Analytical algorithm for capacities of classical and classical-quantum channels,” Reviewed International journal

    M. Hayashi

    IEEE Transactions on Information Theory   Vol. 69 ( 3 ) page: 885 - 898   2023.3

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE  

  5. Pseudo standard entanglement structure cannot be distinguished from standard entanglement structure Reviewed International coauthorship International journal

    H. Arai and M. Hayashi

    New Journal of Physics   Vol. 25   page: 023009   2023.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

  6. Efficient algorithms for quantum information bottleneck Reviewed International coauthorship

    Masahito Hayashi and Yuxiang Yang

    Quantum   Vol. 7   page: 936 - 936   2023.2

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.22331/q-2023-03-02-936

    DOI: https://doi.org/10.22331/q-2023-03-02-936

    Other Link: https://doi.org/10.22331/q-2023-03-02-936

  7. Dense Coding with Locality Restriction on Decoders: Quantum Encoders vs. Super-Quantum Encoders Reviewed International coauthorship International journal

    M. Hayashi and K. Wang

    PRX QUANTUM   Vol. 3   page: 030346 - 030346   2022.9

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:APS  

  8. Graph-theoretic approach for selftesting in Bell scenarios Reviewed International coauthorship International journal

    K. Bharti, M. Ray, Z.-P. Xu, M. Hayashi, L.-C. Kwek, and A. Cabello

    PRX QUANTUM   Vol. 3   page: 030344 - 030344   2022.9

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:APS  

  9. Quantum Verifiable Protocol for Secure Modulo Zero-Sum Randomness Reviewed International coauthorship International journal

    M. Hayashi and T. Koshiba

    Quantum Information Processing   Vol. 21   page: 291 - 291   2022.8

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer  

  10. Exponents in Smoothing the Max-Relative Entropy and of Randomness Extraction Against Quantum Side Information Reviewed International coauthorship International journal

    K. Li, Y. Yao, and M. Hayashi

    Proc. 2022 IEEE Int. Symp. Information Theory (ISIT)     page: 1887 - 1892   2022.6

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

  11. Analytical Calculation Formulas for Capacities of Classical and Classical-Quantum Channels Reviewed International journal

    Hayashi M.

    Proc. 2022 IEEE Int. Symp. Information Theory (ISIT)     page: 109 - 114   2022.6

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

  12. Commitment Capacity of Classical-Quantum Channels Reviewed International coauthorship International journal

    M. Hayashi and N, Warsi,

    Proc. 2022 IEEE Int. Symp. Information Theory (ISIT)     page: 998 - 1003   2022.6

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IEEE  

  13. Quantum Causal Unravelling Reviewed International coauthorship International journal

    G. Bai, Y.-D. Wu, Y. Zhu, M. Hayashi, and G. Chiribella

    npj Quantum Information   Vol. 8   page: 69 - 69   2022.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nature  

  14. Quantum secure direct communication with private dense coding using a general preshared quantum state Reviewed International coauthorship International journal

    J. Wu, G.-L. Long, and M. Hayashi,

    Physical Review Applied   Vol. 17   page: 064011 - 064011   2022.6

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:APS  

  15. Global Heisenberg scaling in noisy and practical phase estimation Reviewed International coauthorship International journal

    M. Hayashi, Z.-W. Liu, and H. Yuan

    Quantum Science and Technology   Vol. 7 ( 2 ) page: 025030 - 025030   2022.4

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:IOP Publishing  

  16. Optimum ratio between two bases in the Bennett-Brassard-1984 protocol with second-order analysis Reviewed International coauthorship International journal

    Hayashi M.

    Physical Review A   Vol. 105   page: 042603 - 042603   2022.4

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:APS  

  17. Quantum-inspired secure wireless communication protocol under spatial and local Gaussian noise assumptions Reviewed International coauthorship

    Hayashi M

    IEEE Access   Vol. 10   page: 29040 - 29068   2022.3

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  18. Universal classical-quantum superposition coding and universal classical-quantum multiple access channel coding Reviewed International coauthorship

    Hayashi M, Cai N.

    IEEE Transactions on Information Theory   Vol. 68 ( 3 ) page: 1822 - 1850   2022.2

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  19. Computation-Aided Classical-Quantum Multiple Access to Boost Network Communication Speeds Reviewed International coauthorship

    Hayashi M., Vázquez-Castro Á.

    Physical Review Applied   Vol. 16 ( 4 )   2021.11

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevApplied.16.054021

    Scopus

  20. Capacity of Quantum Private Information Retrieval with Colluding Servers Reviewed International coauthorship

    IEEE Transactions on Information Theory   Vol. 67 ( 8 ) page: 5491 - 5508   2021.8

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2021.3077269

    Scopus

  21. Quantum Private Information Retrieval for Quantum Messages Reviewed International coauthorship

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2021-July   page: 1052 - 1057   2021.7

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1109/ISIT45174.2021.9517794

    Scopus

  22. Physical Layer Computation as NOMA for Integrated Wireless Systems Reviewed International coauthorship

    Hayashi M., Vazquez-Castro A.

    IEEE Transactions on Communications   Vol. 69 ( 7 ) page: 4520 - 4535   2021.7

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TCOMM.2021.3067907

    Scopus

  23. Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Extraction Reviewed International coauthorship

    Hayashi M., Fang K., Wang K.

    IEEE Transactions on Information Theory   Vol. 67 ( 6 ) page: 3926 - 3944   2021.6

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2021.3064009

    Scopus

  24. Permutation Enhances Classical Communication Assisted by Entangled States Reviewed International coauthorship

    IEEE Transactions on Information Theory   Vol. 67 ( 6 ) page: 3905 - 3925   2021.6

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2021.3060452

    Scopus

  25. Representation matching for remote quantum computing Reviewed International coauthorship

    Yang Y, Hayashi M

    PRX Quantum   Vol. 2   2021.5

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  26. Asymptotically Secure Network Code for Active Attacks Reviewed International coauthorship

    Hayashi M., Cai N.

    IEEE Transactions on Communications   Vol. 69 ( 5 ) page: 3245 - 3259   2021.5

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TCOMM.2021.3057112

    Scopus

  27. Secure Computation-and-Forward with Linear Codes Reviewed International coauthorship

    Hayashi M,, Wadayama T., Vazquez-Catro A.

    IEEE Journal on Selected Areas in Information Theory   Vol. 2   2021.3

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  28. Secure non-linear network code over one-hop relay network Reviewed International coauthorship

    Hayashi M, Cai N.

    IEEE Journal on Selected Areas in Information Theory   Vol. 2   2021.3

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  29. Capacity of Quantum Symmetric Private Information Retrieval with Collusion of All But One of Servers Reviewed International coauthorship

    Song S., Hayashi M.

    IEEE Journal on Selected Areas in Information Theory   Vol. 2   2021.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

  30. Secure Computation-and-Forward with Linear Codes Reviewed International coauthorship

    Hayashi M,, Wadayama T., Vazquez-Catro A.

    IEEE Journal on Selected Areas in Information Theory   Vol. 2   2021.3

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  31. Capacity of Quantum Private Information Retrieval with Multiple Servers Reviewed International coauthorship

    IEEE Transactions on Information Theory   Vol. 67 ( 1 ) page: 452 - 463   2021.1

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2020.3022515

    Scopus

  32. Prior entanglement exponentially improves one-server quantum private information retrieval for quantum messages Reviewed

    Song, SH; Gall, FL; Hayashi, M

    EPJ QUANTUM TECHNOLOGY   Vol. 11 ( 1 )   2024.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:EPJ Quantum Technology  

    Quantum private information retrieval (QPIR) for quantum messages is a quantum communication task, in which a user retrieves one of the multiple quantum states from the server without revealing which state is retrieved. In the one-server setting, we find an exponential gap in the communication complexities between the presence and absence of prior entanglement in this problem with the one-server setting. To achieve this aim, as the first step, we prove that the trivial solution of downloading all messages is optimal under QPIR for quantum messages, which is a similar result to that of classical PIR but different from QPIR for classical messages. As the second step, we propose an efficient one-server one-round QPIR protocol with prior entanglement by constructing a reduction from a QPIR protocol for classical messages to a QPIR protocol for quantum messages in the presence of prior entanglement.

    DOI: 10.1140/epjqt/s40507-024-00266-6

    Web of Science

    Scopus

  33. Generalized quantum Arimoto-Blahut algorithm and its application to quantum information bottleneck Reviewed

    Hayashi, M; Liu, G

    QUANTUM SCIENCE AND TECHNOLOGY   Vol. 9 ( 4 )   2024.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Quantum Science and Technology  

    Quantum information bottleneck was proposed by Grimsmo and Still (2016 Phys. Rev. A 94 012338) as a promising method for quantum supervised machine learning. To study this method, we generalize the quantum Arimoto-Blahut algorithm by Ramakrishnan et al (2021 IEEE Trans. Inf. Theory 67 946) to a function defined over a set of density matrices with linear constraints so that our algorithm can be applied to optimizations of quantum operations. This algorithm has wider applicability, and we apply our algorithm to the quantum information bottleneck with three quantum systems. We numerically compare our obtained algorithm with the existing algorithm by Grimsmo and Still. Our numerical analysis shows that our algorithm is better than their algorithm.

    DOI: 10.1088/2058-9565/ad6eb1

    Web of Science

    Scopus

  34. Measurement-device-independent detection of beyond-quantum state Reviewed

    Yu, BC; Hayashi, M

    NEW JOURNAL OF PHYSICS   Vol. 26 ( 10 )   2024.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:New Journal of Physics  

    In quantum theory, a quantum state on a composite system of two parties realizes a non-negative probability with any measurement element with a tensor product form. However, there also exist non-quantum states which satisfy the above condition. Such states are called beyond-quantum states, and cannot be detected by standard Bell tests. To distinguish a beyond-quantum state from quantum states, we propose a measurement-device-independent (MDI) test for beyond-quantum state detection, which is composed of quantum input states on respective parties and quantum measurements across the input system and the target system on respective parties. The performance of our protocol is independent of the forms of the tested states and the measurement operators, which provides an advantage in practical scenarios. We also discuss the importance of tomographic completeness of the input sets to the detection.

    DOI: 10.1088/1367-2630/ad787c

    Web of Science

    Scopus

  35. Alexander S. Holevo's researches in quantum information theory in 20th century Reviewed

    Hayashi, M

    INTERNATIONAL JOURNAL OF QUANTUM INFORMATION   Vol. 22 ( 05 )   2024.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:International Journal of Quantum Information  

    This paper reviews Holevo's contributions to quantum information theory during the 20 century. At that time, he mainly studied three topics, classical-quantum channel coding, quantum estimation with Craméro-Rao approach and quantum estimation with the group covariant approach. This paper addresses these three topics.

    DOI: 10.1142/S0219749924400069

    Web of Science

    Scopus

  36. Detecting beyond-quantum nonlocality using standard local quantum observables Reviewed

    Arai, H; Yu, BC; Hayashi, M

    PHYSICAL REVIEW A   Vol. 110 ( 1 )   2024.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physical Review A  

    We study the detection of beyond-quantum nonlocal states that can exist in a theoretical model whose local systems are standard quantum theory in the framework of general probabilistic theories (GPTs). We find that device-dependent detections are possible for beyond-quantum nonlocal states in GPTs even though device-independent detections are not valid. We give a device-dependent detection based on local observables to distinguish any beyond-quantum nonlocal state from all standard quantum states. In particular, we give a way to detect any beyond-quantum nonlocal state of the two-qubit system by observing only spin observables on local systems. Our results will help in the experimental detection of beyond-quantum nonlocality or justification of standard quantum theory.

    DOI: 10.1103/PhysRevA.110.L010201

    Web of Science

    Scopus

  37. Non-Adaptive Coding for Two-Way Wiretap Channel With or Without Cost Constraints Reviewed

    Hayashi, M; Chen, YL

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 70 ( 7 ) page: 4611 - 4633   2024.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE Transactions on Information Theory  

    This paper studies the secrecy results for the two-way wiretap channel (TW-WC) with an external eavesdropper under a strong secrecy metric. Employing non-adaptive coding, we analyze the information leakage and the decoding error probability, and derive inner bounds on the secrecy capacity regions for the TW-WC under strong joint and individual secrecy constraints. For the TW-WC without cost constraint, both the secrecy and error exponents could be characterized by the conditional Rényi mutual information in a concise and compact form. And, some special cases secrecy capacity region and sum-rate capacity results are established, demonstrating that adaption is useless in some cases or the maximum sum-rate that could be achieved by non-adaptive coding. For the TW-WC with cost constraint, we consider the peak cost constraint and extend our secrecy results by using the constant composition codes. Accordingly, we characterize both the secrecy and error exponents by a modification of Rényi mutual information, which yields inner bounds on the secrecy capacity regions for the general discrete memoryless TW-WC with cost constraint. Our method works even when a pre-noisy processing is employed based on a conditional distribution in the encoder and can be easily extended to other multi-user communication scenarios.

    DOI: 10.1109/TIT.2023.3343362

    Web of Science

    Scopus

  38. <i>q</i>-Racah probability distribution Reviewed

    Hayashi, M; Hora, A; Yanagida, S

    RAMANUJAN JOURNAL   Vol. 64 ( 3 ) page: 963 - 990   2024.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Ramanujan Journal  

    We introduce a certain discrete probability distribution Pn,m,k,l;q having non-negative integer parameters n, m, k, l and quantum parameter q which arises from a zonal spherical function of the Grassmannian over the finite field Fq with a distinguished spherical vector. Using representation theoretic arguments and hypergeometric summation technique, we derive the presentation of the probability mass function by a single q-Racah polynomial, and also the presentation of the cumulative distribution function in terms of a terminating 4ϕ3-hypergeometric series.

    DOI: 10.1007/s11139-024-00859-w

    Web of Science

    Scopus

  39. When quantum memory is useful for dense coding Reviewed

    Takagi, R; Hayashi, M

    LETTERS IN MATHEMATICAL PHYSICS   Vol. 114 ( 3 )   2024.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Letters in Mathematical Physics  

    We discuss dense coding with n copies of a specific preshared state between the sender and the receiver when the encoding operation is limited to the application of group representation. Typically, to act on multiple local copies of these preshared states, the receiver needs quantum memory, because in general the multiple copies will be generated sequentially. Depending on available encoding unitary operations, we investigate what preshared state offers an advantage of using quantum memory on the receiver’s side.

    DOI: 10.1007/s11005-024-01831-x

    Web of Science

    Scopus

  40. Derivation of standard quantum theory via state discrimination Reviewed

    Arai, H; Hayashi, M

    NEW JOURNAL OF PHYSICS   Vol. 26 ( 5 )   2024.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:New Journal of Physics  

    It is a key issue to characterize the model of standard quantum theory out of general models by an operational condition. The framework of general probabilistic theories (GPTs) is a new information theoretical approach to single out standard quantum theory. It is known that traditional properties, for example, Bell-CHSH inequality, are not sufficient to single out standard quantum theory among possible models in GPTs. As a more precise property, we focus on the bound of the performance for an information task called state discrimination in general models. We give an equivalent condition for outperforming the minimum discrimination error probability under the standard quantum theory given by the trace norm. Besides, by applying the equivalent condition, we characterize standard quantum theory out of general models in GPTs by the bound of the performance for state discrimination.

    DOI: 10.1088/1367-2630/ad4d18

    Web of Science

    Scopus

  41. Two-Server Oblivious Transfer for Quantum Messages Reviewed International coauthorship

    Hayashi, M; Song, SH

    ADVANCED QUANTUM TECHNOLOGIES   Vol. 7 ( 4 )   2024.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Advanced Quantum Technologies  

    Oblivious transfer is considered as a cryptographic primitive task for quantum information processing over a quantum network. It is an essential building block for secure multiparty computation. It is known that one-server oblivious transfer is impossible. When the task is the transmission of classical messages, protocols for two-server oblivious transfer exist, i.e., existing protocols work under the assumption that two servers do not communicate with each other. However, when the task is the transmission of a quantum state, no existing method works even under the above two-server assumption. Two-server oblivious transfer protocols for quantum messages are proposed for the first time.

    DOI: 10.1002/qute.202300184

    Web of Science

    Scopus

  42. Equivocations, Exponents, and Second-Order Coding Rates Under Various Renyi Information Measures ( vol 63, pg 975, 2016) Reviewed

    Hayashi, M; Tan, VYF

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 70 ( 4 ) page: 3046 - 3048   2024.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE Transactions on Information Theory  

    There exists a gap for the proofs of the converse parts of (49) and (50) in Theorem 1 and (74) of Theorem 3. These converse parts use Lemma 4, whose proofs contain a gap. We fix these errors when the rate is larger than the critical rate. A special case of (50) does not coincide the recent result (Li and Yao, 2022, arXiv:2209.00554v1) when the rate is smaller than the critical rate.

    DOI: 10.1109/TIT.2024.3355506

    Web of Science

    Scopus

  43. Covert Communication With Gaussian Noise: From Random Access Channel to Point-to-Point Channel Reviewed

    Hayashi, M; Vázquez-Castro, A

    IEEE TRANSACTIONS ON COMMUNICATIONS   Vol. 72 ( 3 ) page: 1516 - 1531   2024.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE Transactions on Communications  

    We propose a covert communication protocol for the spread-spectrum multiple random access with additive white Gaussian noise (AWGN) channel. No existing paper has studied covert communication for the random access channel. Our protocol assumes binary discrete phase-shift keying (BPSK) modulation, and it works well under imperfect channel state information (I-CSI) for both the legitimate and adversary receivers, which is a realistic assumption in the low power regime. Also, our method assumes that the legitimate users share secret variables in a similar way as the preceding studies. Although several studies investigated the covert communication for the point-to-point communication, no existing paper considers the covert communication under the above uncertainty assumption even for point-to-point communication. Our protocol under the above uncertainty assumption allows O(n) legitimate senders and O(n/n) active legitimate senders. Furthermore, our protocol can be converted to a protocol for point-to-point communication that works under the above uncertainty assumption.

    DOI: 10.1109/TCOMM.2023.3332861

    Web of Science

    Scopus

  44. Universal Adaptive Construction of Verifiable Secret Sharing and Its Application to Verifiable Secure Distributed Data Storage Reviewed International coauthorship

    Hayashi, M; Koshiba, T

    IEEE-ACM TRANSACTIONS ON NETWORKING   Vol. 32 ( 1 ) page: 253 - 267   2024.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE/ACM Transactions on Networking  

    Secret sharing is a useful method for secure distributed data storage. Such a distributed data storage can avoid the information leakage under an attack to a limited number of distributed servers. While such distributed servers send their shares to an end user according to the request, there is a risk that malicious distributed servers send incorrect shares. To detect or identify such malicious servers, we need verifiable secure distributed data storage, which can be constructed from verifiable secret sharing. However, many of previous protocols for verifiable secret sharing are constructed in a specific form. This paper proposes an adaptive construction of verifiable secret sharing, which uses an existing secret sharing protocol as a subprotocol. Also, our method can be applied to any existing secret sharing protocol. This type construction realizes an economical construction.

    DOI: 10.1109/TNET.2023.3283577

    Web of Science

    Scopus

  45. Iterative minimization algorithm on a mixture family Reviewed

    Hayashi M.

    Information Geometry     2024

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Information Geometry  

    Iterative minimization algorithms appear in various areas including machine learning, neural networks, and information theory. The em algorithm is one of the famous iterative minimization algorithms in the area of machine learning, and the Arimoto–Blahut algorithm is a typical iterative algorithm in the area of information theory. However, these two topics had been separately studied for a long time. In this paper, we generalize an algorithm that was recently proposed in the context of the Arimoto–Blahut algorithm. Then, we show various convergence theorems, one of which covers the case when each iterative step is done approximately. Also, we apply this algorithm to the target problem of the em algorithm, and propose its improvement. In addition, we apply it to other various problems in information theory.

    DOI: 10.1007/s41884-024-00140-5

    Scopus

  46. Reverse em-problem based on Bregman divergence and its application to classical and quantum information theory Reviewed

    Hayashi M.

    Information Geometry     2024

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Information Geometry  

    The recent paper (IEEE Trans. IT 69, 1680) proposed an analytical calculation method for the channel capacity without iteration. However, it has restrictions for its application. Also, it does not explain why the channel capacity can be solved analytically in this special case. To expand the applicability of this method, we recall the reverse em-problem, which was proposed by Toyota (Information Geometry, 3, 1355 (2020)) as the repetition of the inverse map of the em iteration to calculate the channel capacity, which is given as the maximum of the mutual information. However, it left several open problems. We formulate the reverse em-problem based on Bregman divergence, and solve these open problems. Using these results, we convert the reverse em-problem into em-problems, and derive a non-iterative formula for the reverse em-problem, which can be considered as a generalization of the above analytical calculation method. Additionally, this derivation explains the information geometrical structure of this special case.

    DOI: 10.1007/s41884-024-00147-y

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  47. Robust and efficient verification of graph states in blind measurement-based quantum computation Reviewed International coauthorship

    Li, ZH; Zhu, HJ; Hayashi, M

    NPJ QUANTUM INFORMATION   Vol. 9 ( 1 )   2023.11

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    Blind quantum computation (BQC) is a secure quantum computation method that protects the privacy of clients. Measurement-based quantum computation (MBQC) is a promising approach for realizing BQC. To obtain reliable results in blind MBQC, it is crucial to verify whether the resource graph states are accurately prepared in the adversarial scenario. However, previous verification protocols for this task are too resource-consuming or noise-susceptible to be applied in practice. Here, we propose a robust and efficient protocol for verifying arbitrary graph states with any prime local dimension in the adversarial scenario, which leads to a robust and efficient protocol for verifying the resource state in blind MBQC. Our protocol requires only local Pauli measurements and is thus easy to realize with current technologies. Nevertheless, it can achieve optimal scaling behaviors with respect to the system size and the target precision as quantified by the infidelity and significance level, which has never been achieved before. Notably, our protocol can exponentially enhance the scaling behavior with the significance level.

    DOI: 10.1038/s41534-023-00783-9

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  48. Comments on 'Analytical Algorithm for Capacities of Classical and Classical-Quantum Channels' Reviewed

    Hayashi M.

    IEEE Transactions on Information Theory   Vol. 69 ( 11 )   2023.11

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    After completing the review process of the above article, the author found the reference Muroga (1953), which has already derived an analytical calculation method for the channel capacity under a certain condition. This comment explains the relation between Muroga's article and this article.

    DOI: 10.1109/TIT.2023.3299885

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  49. Unified Approach to Secret Sharing and Symmetric Private Information Retrieval With Colluding Servers in Quantum Systems Reviewed

    Hayashi, M; Song, S

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 69 ( 10 ) page: 6537 - 6563   2023.10

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    This paper unifiedly addresses two kinds of key quantum secure tasks, i.e., quantum versions of secret sharing (SS) and symmetric private information retrieval (SPIR) by using multi-target monotone span program (MMSP), which characterizes the classical linear protocols of SS and SPIR. SS has two quantum extensions; One is the classical-quantum (CQ) setting, in which the secret to be sent is classical information and the shares are quantum systems. The other is the quantum-quantum (QQ) setting, in which the secret to be sent is a quantum state and the shares are quantum systems. The relation between these quantum protocols and MMSP has not been studied sufficiently. We newly introduce the third setting, i.e., the entanglement-assisted (EA) setting, which is defined by modifying the CQ setting with allowing prior entanglement between the dealer and the end-user who recovers the secret by collecting the shares. Showing that the linear version of SS with the EA setting is directly linked to MMSP, we characterize linear quantum versions of SS with the CQ ad QQ settings via MMSP. Further, we introduce the EA setting of SPIR, which is shown to link to MMSP. In addition, we discuss the quantum version of maximum distance separable codes.

    DOI: 10.1109/TIT.2023.3282940

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  50. Commitment Capacity of Classical-Quantum Channels Reviewed

    Hayashi, M; Warsi, NA

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 69 ( 8 ) page: 5083 - 5099   2023.8

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    We study commitment scheme for classical-quantum channels. To accomplish this we define various notions of commitment capacity for these channels and prove matching upper and lower bound on it in terms of the conditional entropy. Our achievability (lower bound) proof is quantum generalisation of the work of one of the authors (arXiv:2103.11548) which studied the problem of secure list decoding and its application to bit-string commitment. The techniques we use in the proof of converse (upper bound) is similar in spirit to the techniques introduced by Winter, Nascimento and Imai (Cryptography and Coding 2003) to prove upper bound on the commitment capacity of classical channels. However, generalisation of this technique to the quantum case is not so straightforward and requires some new constructions, which can be of independent interest.

    DOI: 10.1109/TIT.2023.3268321

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  51. Bregman Divergence Based Em Algorithm and its Application to Classical and Quantum Rate Distortion Theory Reviewed

    Hayashi, M

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 69 ( 6 ) page: 3460 - 3492   2023.6

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    We formulate em algorithm in the framework of Bregman divergence, which is a general problem setting of information geometry. That is, we address the minimization problem of the Bregman divergence between an exponential subfamily and a mixture subfamily in a Bregman divergence system. Then, we show the convergence and its speed under several conditions. We apply this algorithm to rate distortion and its variants including the quantum setting, and show the usefulness of our general algorithm. In fact, existing applications of Arimoto-Blahut algorithm to rate distortion theory make the optimization of the weighted sum of the mutual information and the cost function by using the Lagrange multiplier. However, in rate distortion theory, it is needed to minimize the mutual information under the constant constraint for the cost function. Our algorithm directly solves this minimization. In addition, we have numerically checked the convergence speed of our algorithm in the classical case of rate distortion problem.

    DOI: 10.1109/TIT.2023.3239955

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  52. Analytical Algorithm for Capacities of Classical and Classical-Quantum Channels Reviewed

    Hayashi M.

    IEEE Transactions on Information Theory   Vol. 69 ( 3 ) page: 1381 - 1393   2023.3

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    We derive an analytical algorithm for the channel capacity of a classical channel without any iteration, while its existing algorithms require iterations and the number of iterations depends on the required precision level. Hence, our algorithm is its first analytical algorithm for this task without any iteration, while this algorithm needs several conditions for the channel. We apply the obtained algorithm to examples, and see how the obtained algorithm works in these examples. Then, we extend it to the channel capacity of a classical-quantum (cq-) channel. Many existing studies proposed algorithms for a cq-channel and all of them require iterations. Our extended analytical algorithm has also no iteration, and outputs the exactly optimum value.

    DOI: 10.1109/TIT.2022.3215178

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  53. Tight Exponential Analysis for Smoothing the Max-Relative Entropy and for Quantum Privacy Amplification Reviewed

    Li, K; Yao, YS; Hayashi, M

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 69 ( 3 ) page: 1680 - 1694   2023.3

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    The max-relative entropy together with its smoothed version is a basic tool in quantum information theory. In this paper, we derive the exact exponent for the asymptotic decay of the small modification of the quantum state in smoothing the max-relative entropy based on purified distance. We then apply this result to the problem of privacy amplification against quantum side information, and we obtain an upper bound for the exponent of the asymptotic decreasing of the insecurity, measured using either purified distance or relative entropy. Our upper bound complements the earlier lower bound established by Hayashi, and the two bounds match when the rate of randomness extraction is above a critical value. Thus, for the case of high rate, we have determined the exact security exponent. Following this, we give examples and show that in the low-rate case, neither the upper bound nor the lower bound is tight in general. This exhibits a picture similar to that of the error exponent in channel coding. Lastly, we investigate the asymptotics of equivocation and its exponent under the security measure using the sandwiched Rényi divergence of order s (1,2] , which has not been addressed previously in the quantum setting.

    DOI: 10.1109/TIT.2022.3217671

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  54. Efficient algorithms for quantum information bottleneck Reviewed International coauthorship

    Hayashi, M; Yang, YX

    QUANTUM   Vol. 7   2023.2

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    The ability to extract relevant information is critical to learning. An ingenious approach as such is the information bottleneck, an optimisation problem whose solution corresponds to a faithful and memory-efficient representation of relevant information from a large system. The advent of the age of quantum computing calls for efficient methods that work on information regarding quantum systems. Here we address this by proposing a new and general algorithm for the quantum generalisation of information bottleneck. Our algorithm excels in the speed and the definiteness of convergence compared with prior results. It also works for a much broader range of problems, including the quantum extension of deterministic information bottleneck, an important variant of the original information bottleneck problem. Notably, we discover that a quantum system can achieve strictly better performance than a classical system of the same size regarding quantum information bottleneck, providing new vision on justifying the advantage of quantum machine learning.

    DOI: 10.22331/q-2023-03-02-936

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  55. Pseudo standard entanglement structure cannot be distinguished from standard entanglement structure Reviewed

    Arai, H; Hayashi, M

    NEW JOURNAL OF PHYSICS   Vol. 25 ( 2 )   2023.2

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    An experimental verification of the maximally entangled state ensures that the constructed state is close to the maximally entangled state, but it does not guarantee that the state is exactly the same as the maximally entangled state. Further, the entanglement structure is not uniquely determined in general probabilistic theories even if we impose that the local subsystems are fully equal to quantum systems. Therefore, the existence of the maximally entangled state depends on whether the standard entanglement structure (SES) is valid. To examine this issue, we introduce pseudo SES as a structure of quantum composite system under natural assumptions based on the existence of projective measurements and the existence of approximations of all maximally entangled standard states. Surprisingly, there exist infinitely many pseudo SESs different from the SES. In our setting, any maximally entangled state can be arbitrarily approximated by an entangled state that belongs to our obtained pseudo standard entanglement structure. That is, experimental verification does not exclude the possibility of our obtained pseudo standard entanglement structure that is different from the standard entanglement structure. On the other hand, such pseudo structures never possess global unitary symmetry, i.e. global unitary symmetry is essential condition for the SES.

    DOI: 10.1088/1367-2630/acb565

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  56. Tight Cramér-Rao type bounds for multiparameter quantum metrology through conic programming Reviewed

    Hayashi M., Ouyang Y.

    Quantum   Vol. 7   2023

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    In the quest to unlock the maximum potential of quantum sensors, it is of paramount importance to have practical measurement strategies that can estimate incompatible parameters with best precisions possible. However, it is still not known how to find practical measurements with optimal precisions, even for uncorrelated measurements over probe states. Here, we give a concrete way to find uncorrelated measurement strategies with optimal precisions. We solve this fundamental problem by introducing a framework of conic programming that unifies the theory of precision bounds for multiparameter estimates for uncorrelated and correlated measurement strategies under a common umbrella. Namely, we give precision bounds that arise from linear programs on various cones defined on a tensor product space of matrices, including a particular cone of separable matrices. Subsequently, our theory allows us to develop an efficient algorithm that calculates both upper and lower bounds for the ultimate precision bound for uncorrelated measurement strategies, where these bounds can be tight. In particular, the uncorrelated measurement strategy that arises from our theory saturates the upper bound to the ultimate precision bound. Also, we show numerically that there is a strict gap between the previous efficiently computable bounds and the ultimate precision bound.

    DOI: 10.22331/Q-2023-08-29-1094

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  57. Dense Coding with Locality Restriction on Decoders: Quantum Encoders versus Superquantum Encoders Reviewed

    Hayashi, M; Wang, K

    PRX QUANTUM   Vol. 3 ( 3 )   2022.9

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    We investigate practical dense coding by imposing locality restrictions on decoders and symmetry restrictions on encoders within the resource theory of asymmetry framework. In this task, the sender Alice and the helper Fred preshare an entangled state. Alice encodes a classical message into the quantum state using a symmetric preserving encoder and sends the encoded state to Bob through a noiseless quantum channel. The receiver Bob and helper Fred are limited to performing quantum measurements satisfying certain locality restrictions to decode the classical message. We are interested in the ultimate dense coding capacity under these constraints. Our contributions are summarized as follows. First, we derive both one-shot and asymptotic optimal achievable transmission rates of the dense coding task under different encoder and decoder combinations. Surprisingly, our results reveal that the transmission rate cannot be improved even when the decoder is relaxed from one-way local operations and classical communication (LOCC) to two-way LOCC, separable measurements, and partial transpose positive measurements of the bipartite system. Second, depending on the class of allowed decoders with certain locality restrictions, we relax the class of encoding operations to superquantum encoders in the general probability theory framework and derive dense coding transmission rates under this setting. For example, when the decoder is fixed to a separable measurement, theoretically, a positive operation is allowed as an encoding operation. Remarkably, even under this superquantum relaxation, the transmission rate still cannot be lifted. This fact highlights the universal validity of our analysis on practical dense coding beyond quantum theory.

    DOI: 10.1103/PRXQuantum.3.030346

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  58. Graph-Theoretic Approach for Self-Testing in Bell Scenarios Reviewed

    Bharti, K; Ray, M; Xu, ZP; Hayashi, M; Kwek, LC; Cabello, A

    PRX QUANTUM   Vol. 3 ( 3 )   2022.9

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    Self-testing is a technology to certify states and measurements using only the statistics of the experiment. Self-testing is possible if some extremal points in the set BQ of quantum correlations for a Bell experiment are achieved, up to isometries, with specific states and measurements. However, BQ is difficult to characterize, so it is also difficult to prove whether or not a given matrix of quantum correlations allows for self-testing. Here, we show how some tools from graph theory can help to address this problem. We observe that BQ is strictly contained in an easy-to-characterize set associated with a graph, Θ(G). Therefore, whenever the optimum over BQ and the optimum over Θ(G) coincide, self-testing can be demonstrated by simply proving self-testability with Θ(G). Interestingly, these maxima coincide for the quantum correlations that maximally violate many families of Bell-like inequalities. Therefore, we can apply this approach to prove the self-testability of many quantum correlations, including some that are not previously known to allow for self-testing. In addition, this approach connects self-testing to some open problems in discrete mathematics. We use this connection to prove a conjecture [M. Araújo et al., Phys. Rev. A, 88, 022118 (2013)] about the closed-form expression of the Lovász theta number for a family of graphs called the Möbius ladders. Although there are a few remaining issues (e.g., in some cases, the proof requires the assumption that measurements are of rank 1), this approach provides an alternative method to self-testing and draws interesting connections between quantum mechanics and discrete mathematics.

    DOI: 10.1103/PRXQuantum.3.030344

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  59. Quantum verifiable protocol for secure modulo zero-sum randomness Reviewed

    Hayashi, M; Koshiba, T

    QUANTUM INFORMATION PROCESSING   Vol. 21 ( 8 )   2022.8

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    We propose a new cryptographic resource, secure modulo zero-sum randomness, as a resource to implement a task of secure modulo summation, and its quantum protocol. Secure modulo summation is the calculation of modulo summation Y1+ ⋯ + Ym when m players have their individual variables Y1, … , Ym with keeping the secrecy of the individual variables. Secure modulo zero-sum randomness is a set of m variables X1, … , Xm held by m players that satisfy the zero sum condition X1+ ⋯ + Xm= 0 with a certain security condition. This paper explains the relation between these two concepts and proposes a quantum verifiable protocol for secure modulo summation. The advantage for quantum protocol is the verifiability based on self-testing, which does not need to trust measurement devices and can be realized by using a statistical concept, significance level, while any classical method needs to trust several components of the protocol. Then, we propose various cryptographic applications for secure modulo zero-sum randomness. We also compare our quantum verifiable protocol with the conventional method for secure modulo summation.

    DOI: 10.1007/s11128-022-03639-x

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  60. Quantum causal unravelling Reviewed

    Bai, G; Wu, YD; Zhu, Y; Hayashi, M; Chiribella, G

    NPJ QUANTUM INFORMATION   Vol. 8 ( 1 )   2022.6

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    Complex processes often arise from sequences of simpler interactions involving a few particles at a time. These interactions, however, may not be directly accessible to experiments. Here we develop the first efficient method for unravelling the causal structure of the interactions in a multipartite quantum process, under the assumption that the process has bounded information loss and induces causal dependencies whose strength is above a fixed (but otherwise arbitrary) threshold. Our method is based on a quantum algorithm whose complexity scales polynomially in the total number of input/output systems, in the dimension of the systems involved in each interaction, and in the inverse of the chosen threshold for the strength of the causal dependencies. Under additional assumptions, we also provide a second algorithm that has lower complexity and requires only local state preparation and local measurements. Our algorithms can be used to identify processes that can be characterized efficiently with the technique of quantum process tomography. Similarly, they can be used to identify useful communication channels in quantum networks, and to test the internal structure of uncharacterized quantum circuits.

    DOI: 10.1038/s41534-022-00578-4

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  61. Quantum Secure Direct Communication with Private Dense Coding Using a Reviewed

    Wu, JW; Long, GL; Hayashi, M

    PHYSICAL REVIEW APPLIED   Vol. 17 ( 6 )   2022.6

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    We study quantum secure direct communication using a general preshared quantum state and a generalization of dense coding. In this scenario, Alice is allowed to apply a unitary operation on the preshared state to encode her message, and the set of allowed unitaries forms a group. To decode the message, Bob is allowed to apply a measurement across his system and the system he receives. In the worst scenario, we guarantee that Eve obtains no information for the message even when Eve accesses the joint system between the system that she intercepts and her original system of the preshared state. For a practical application, we propose a concrete protocol and derive an upper bound of information leakage in the finite-length setting. We also discuss how to apply our scenario to the case with discrete Weyl-Heisenberg representation when the preshared state is unknown.

    DOI: 10.1103/PhysRevApplied.17.064011

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  62. Secure list decoding and its application to bit-string commitment Reviewed International coauthorship

    Hayashi M.

    IEEE Transactions on Information Theory   Vol. 68 ( 6 ) page: 3620 - 3642   2022.6

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    DOI: 10.1109/TIT.2022.3150498

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  63. Global Heisenberg scaling in noisy and practical phase estimation Reviewed

    Hayashi, M; Liu, ZW; Yuan, HD

    QUANTUM SCIENCE AND TECHNOLOGY   Vol. 7 ( 2 )   2022.4

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    Heisenberg scaling characterizes the ultimate precision of parameter estimation enabled by quantum mechanics, which represents an important quantum advantage of both theoretical and technological interest. Here, we present a comprehensive and rigorous study of the attainability of strong, global notions of Heisenberg scaling (in contrast to the commonly studied local estimation based on e.g. quantum Fisher information) in the fundamental problem of quantum metrology, in noisy environments. As our first contribution, we formally define two useful notions of Heisenberg scaling in global estimation respectively based on the average estimation error and the limiting distribution of estimation error (which we highlight as a practically important figure of merit). A main result of this work is that for the standard phase damping noise, an O(n -1) noise rate is a necessary and sufficient condition for attaining global Heisenberg scaling. We first prove that O(n -1) is an upper bound on the noise rate for Heisenberg scaling to be possible, and then show by constructing a 'robust' estimation procedure that global Heisenberg scaling in both senses can indeed be achieved under Θ(n -1) noise. In addition, we provide a practically more friendly adaptive protocol using only an one-qubit memory, which achieves global Heisenberg scaling in terms of limiting distribution as well under O(n -1) noise.

    DOI: 10.1088/2058-9565/ac5d7e

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  64. Equivalence of Non-Perfect Secret Sharing and Symmetric Private Information Retrieval With General Access Structure Reviewed International coauthorship International journal

    Song, S; Hayashi, M

    IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS   Vol. 40 ( 3 ) page: 999 - 1012   2022.3

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    We study the equivalence between non-perfect secret sharing (NSS) and symmetric private information retrieval (SPIR) with arbitrary response and collusion patterns. NSS and SPIR are defined with an access structure, which corresponds to the authorized/forbidden sets for NSS and the response/collusion patterns for SPIR. We prove the equivalence between NSS and SPIR in the following two senses. 1) Given any SPIR protocol with an access structure, an NSS protocol is constructed with the same access structure and the same rate. 2) Given any linear NSS protocol with an access structure, a linear SPIR protocol is constructed with the same access structure and the same rate. We prove the first relation even if the SPIR protocol has imperfect correctness and secrecy. From the first relation, we derive an upper bound of the SPIR capacity for arbitrary response and collusion patterns. For the special case of \mathsf {n} -server SPIR with \mathsf {r} responsive and \mathsf {t} colluding servers, this upper bound proves that the SPIR capacity is (\mathsf {r}-\mathsf {t})/\mathsf {n}. From the second relation, we prove that a SPIR protocol exists for any response and collusion patterns.

    DOI: 10.1109/JSAC.2022.3142375

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  65. On the Capacity of Quantum Private Information Retrieval From MDS-Coded and Colluding Servers Reviewed International coauthorship

    Allaix, M; Song, S; Holzbaur, L; Pllaha, T; Hayashi, M; Hollanti, C

    IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS   Vol. 40 ( 3 ) page: 885 - 898   2022.3

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    In quantum private information retrieval (QPIR), a user retrieves a classical file from multiple servers by downloading quantum systems without revealing the identity of the file. The QPIR capacity is the maximal achievable ratio of the retrieved file size to the total download size. In this paper, the capacity of QPIR from MDS-coded and colluding servers is studied for the first time. Two general classes of QPIR, called stabilizer QPIR and dimension-squared QPIR induced from classical strongly linear PIR are defined, and the related QPIR capacities are derived. For the non-colluding case, the general QPIR capacity is derived when the number of files goes to infinity. A general statement on the converse bound for QPIR with coded and colluding servers is derived showing that the capacities of stabilizer QPIR and dimension-squared QPIR induced from any class of PIR are upper bounded by twice the classical capacity of the respective PIR class. The proposed capacity-achieving scheme combines the star-product scheme by Freij-Hollanti et al. and the stabilizer QPIR scheme by Song et al. by employing (weakly) self-dual Reed-Solomon codes.

    DOI: 10.1109/JSAC.2022.3142363

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  66. Universal Classical-Quantum Superposition Coding and Universal Classical-Quantum Multiple Access Channel Coding Reviewed

    Hayashi, M; Cai, N

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 68 ( 3 ) page: 1822 - 1850   2022.3

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    DOI: 10.1109/TIT.2021.3131575

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  67. Usefulness of adaptive strategies in asymptotic quantum channel discrimination Reviewed International coauthorship

    Physical Review A   Vol. 105 ( 2 )   2022.2

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    DOI: 10.1103/PhysRevA.105.022419

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  68. Information geometry approach to parameter estimation in hidden Markov model Reviewed International coauthorship

    Hayashi M.

    Bernoulli   Vol. 28 ( 1 ) page: 307 - 342   2022.2

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    DOI: 10.3150/21-BEJ1344

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  69. Secure Physical Layer Network Coding versus Secure Network Coding. Reviewed International coauthorship

    Hayashi M

    Entropy (Basel, Switzerland)   Vol. 24 ( 1 )   2022.1

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    DOI: 10.3390/e24010047

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  70. Quantum-Inspired Secure Wireless Communication Protocol Under Spatial and Local Gaussian Noise Assumptions Reviewed

    Hayashi, M

    IEEE ACCESS   Vol. 10   page: 29040 - 29068   2022

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    Inspired by quantum key distribution, we consider wireless communication between Alice and Bob when the noise generated in the intermediate space between Alice and Bob is controlled by Eve. Our model divides the channel noise into two parts, the noise generated during the transmission and the noise generated in the detector. Eve is allowed to control the former, but is not allowed to do the latter. While the latter is assumed to be a Gaussian random variable, the former is not assumed to be a Gaussian random variable. In this situation, using backward reconciliation and random sampling, we propose a protocol to generate secure keys between Alice and Bob under the assumption that Eve's detector has a Gaussian noise and Eve is not so close to Alice's transmitting device. In our protocol, the security criteria are quantitatively guaranteed even with finite block-length code based on the evaluation of error of the estimation of the channel.

    DOI: 10.1109/ACCESS.2022.3159331

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  71. Analytical calculation formulas for capacities of classical and classical-quantum channels Reviewed

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2022-June   page: 91 - 96   2022

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    We derive an analytical calculation formula for the channel capacity of a classical channel without any iteration while its existing algorithms require iterations and the number of iteration depends on the required precision level. Hence, our formula is its first analytical formula without any iteration. We apply the obtained formula to examples and see how the obtained formula works in these examples.

    DOI: 10.1109/ISIT50566.2022.9834600

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  72. Exponents in smoothing the max-relative entropy and of randomness extraction against quantum side information Reviewed

    Li K., Yao Y., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2022-June   page: 1862 - 1867   2022

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    This paper is eligible for the Jack Keil Wolf ISIT Student Paper Award.The smooth max-relative entropy is a basic tool in quantum information theory and cryptography. In this paper, we derive the exact exponent for the decay of the small modification of the quantum state in smoothing the max-relative entropy. We then apply this result to the problem of privacy amplification against quantum side information and obtain an upper bound for the exponent of the decreasing of the insecurity, measured using either purified distance or relative entropy. Our upper bound complements the earlier lower bound established by Hayashi, and the two bounds match when the rate of randomness extraction is above a critical value. Thus, for the case of high rate, we have determined the exact security exponent. Following this, we give examples and show that in the low-rate case, neither the upper bound nor the lower bound is tight in general.Lastly, we investigate the asymptotics of equivocation and its exponent under the security measure using the sandwiched Rényi divergence of order between 1 and 2, which has not been addressed previously in the quantum setting.

    DOI: 10.1109/ISIT50566.2022.9834595

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  73. Commitment capacity of classical-quantum channels Reviewed

    Hayashi M., Warsi N.A.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2022-June   page: 1058 - 1063   2022

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    We study commitment scheme for classical-quantum channels. To accomplish this we define various notions of commitment capacity for these channels and prove matching upper and lower bound on it in terms of the conditional entropy. Our achievability (lower bound) proof is quantum generalisation of the work of one of the authors (arXiv:2103.11548) which studied the problem of secure list decoding and its application to bit-string commitment. The techniques we use in the proof of converse (upper bound) is similar in spirit to the techniques introduced by Winter, Nascimento and Imai (Cryptography and Coding 2003) to prove upper bound on the commitment capacity of classical channels. However, generalisation of this technique to the quantum case is not so straightforward and requires some new constructions, which can be of independent interest.

    DOI: 10.1109/ISIT50566.2022.9834801

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  74. Refined Density Evolution Analysis of LDPC Codes for Successive Interference Cancellation Reviewed International coauthorship

    Takabe S., Wadayama T., Hayashi M.

    IEEE Global Communications Conference,     2021.12

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  75. Erratum: Concise and tight security analysis of the Bennett-Brassard 1984 protocol with finite key lengths (New Journal of Physics (2012) 14 (093014) DOI: 10.1088/1367-2630/14/9/093014) Reviewed International coauthorship

    Hayashi M., Tsurumaru T.

    New Journal of Physics   Vol. 23 ( 12 )   2021.12

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    DOI: 10.1088/1367-2630/ac3c61

    Scopus

  76. Asymptotic Separation Between Adaptive and Non-adaptive Strategies in Quantum Channel Discrimination Reviewed International coauthorship

    Salek M., Hayashi M., Winter A.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  77. Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Reviewed International coauthorship

    Hayashi M, Fang K., Wang K.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  78. Universal classical-quantum multiple access channel coding Reviewed International coauthorship

    Hayashi M, Cai N.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  79. Equivalence of Non-Perfect Secret Sharing and Symmetric Private Information Retrieval with General Access Structure Reviewed International coauthorship

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2021-July   page: 982 - 987   2021.7

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    DOI: 10.1109/ISIT45174.2021.9517803

    Scopus

  80. Secure Modulo Sum via Multiple Access Channel Reviewed International coauthorship

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  81. Asymptotic Separation Between Adaptive and Non-adaptive Strategies in Quantum Channel Discrimination Reviewed International coauthorship

    Salek M., Hayashi M., Winter A.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  82. Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Reviewed International coauthorship

    Hayashi M, Fang K., Wang K.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  83. Universal classical-quantum multiple access channel coding Reviewed International coauthorship

    Hayashi M, Cai N.

    IEEE International Symposium on Information Theory - Proceedings     2021.7

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  84. Single-Shot Secure Quantum Network Coding for General Multiple Unicast Network with Free One-Way Public Communication Reviewed International coauthorship

    Kato G., Owari M., Hayashi M.

    IEEE Transactions on Information Theory   Vol. 67 ( 7 ) page: 4564 - 4586   2021.6

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    DOI: 10.1109/TIT.2021.3078812

    Scopus

  85. Quantum state estimation with nuisance parameters Reviewed International coauthorship

      Vol. 53 ( 45 )   2020.11

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    DOI: 10.1088/1751-8121/ab8b78

    Scopus

  86. Perfect Discrimination in Approximate Quantum Theory of General Probabilistic Theories. Reviewed International coauthorship

    Yoshida Y, Arai H, Hayashi M

    Physical review letters   Vol. 125 ( 15 ) page: 150402   2020.10

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    As a modern approach for the foundation of quantum theory, existing studies of general probabilistic theories gave various models of states and measurements that are quite different from quantum theory. In this Letter, to seek a more realistic situation, we investigate models approximately close to quantum theory. We define larger measurement classes that are smoothly connected with the class of POVMs via a parameter, and investigate the performance of perfect discrimination. As a result, we give a sufficient condition of perfect discrimination, which shows a significant improvement beyond the class of POVMs.

    DOI: 10.1103/PhysRevLett.125.150402

    Scopus

    PubMed

  87. Communication cost of quantum processes Reviewed International coauthorship

    IEEE Journal on Selected Areas in Information Theory   Vol. 1   page: 387 - 400   2020.9

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  88. Reduction Theorem for Secrecy over Linear Network Code for Active Attacks. Reviewed International coauthorship

    Hayashi M, Owari M, Kato G, Cai N

    Entropy (Basel, Switzerland)   Vol. 22 ( 9 )   2020.9

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    We discuss the effect of sequential error injection on information leakage under a network code. We formulate a network code for the single transmission setting and the multiple transmission setting. Under this formulation, we show that the eavesdropper cannot increase the power of eavesdropping by sequential error injection when the operations in the network are linear operations. We demonstrated the usefulness of this reduction theorem by applying a concrete example of network.

    DOI: 10.3390/e22091053

    Scopus

    PubMed

  89. Secure Communication over Fully Quantum Gel'fand-Pinsker Wiretap Channel Reviewed International coauthorship

    Anshu A., Hayashi M., Warsi N.A.

    IEEE Transactions on Information Theory   Vol. 66 ( 9 ) page: 5548 - 5566   2020.9

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    In this work we study the problem of secure communication over a fully quantum Gel'fand-Pinsker channel. The best known achievability rate for this channel model in the classical case was proven by Goldfeld, Cuff and Permuter, and here we generalize their result. One key feature of the results obtained in this work is that all the bounds are based on error exponents. We obtain our achievability result via the technique of simultaneous pinching. This in turn allows us to show the existence of a simultaneous decoder. Further, to obtain our encoding technique and to prove the security feature of our coding scheme we prove a bivariate classical-quantum channel resolvability lemma and a conditional classical-quantum channel resolvability lemma. As a byproduct of the achievability result obtained in this work, we also obtain an achievable rate for a fully quantum Gel'fand-Pinsker channel in the absence of Eve. The form of this achievable rate matches with its classical counterpart. The Gel'fand-Pinsker channel model had earlier only been studied for the classical-quantum case and in the case where Alice (the sender) and Bob (the receiver) have shared entanglement between them.

    DOI: 10.1109/TIT.2020.3005015

    Scopus

  90. Quantum state transmission over partially corrupted quantum information network Reviewed International coauthorship

    Hayashi M., Song S.

    Physical Review Research   Vol. 2 ( 3 )   2020.7

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    Quantum communication over network is particularly appealing in a similar way to classical network communication, but a partially corrupted quantum network has not been sufficiently studied. We discuss quantum state transmission over a partially corrupted quantum network, in which the sender transmits m0 qudits, i.e., d-level systems, to the receiver via network, but m1 channels are corrupted. As our result, we show that the optimal transmission rate is at least (m0-2m1+1)logd under the following two settings. In the first case, the unitaries on intermediate nodes are arbitrary and the corruptions on the m1 channels are individual. In the second case, the unitaries on intermediate nodes are restricted to Clifford operations and the corruptions on the m1 channels are adaptive, i.e., they are caused by an attack with a quantum memory. Further, our code in the second case realizes the noiseless communication even with the single-shot setting and is constructed dependently only on the network topology and the places of the m1 corrupted channels.

    DOI: 10.1103/PhysRevResearch.2.033079

    Scopus

  91. Asymptotic Behavior of Spatial Coupling LDPC Coding for Compute-and-Forward Two-Way Relaying Reviewed International coauthorship

    Takabe S., Wadayama T., Hayashi M.

    IEEE Transactions on Communications   Vol. 68 ( 7 ) page: 4063 - 4072   2020.7

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    Compute-and-forward (CAF) relaying is an effective way to increase bandwidth efficiency of wireless two-way relay channels. Design of error-correcting codes and their decoding algorithms suitable for CAF relaying schemes remains an important issue to be studied. In this paper, we will analyze an asymptotic behavior of LDPC codes over two-way relay channels based on density evolution (DE). Because of the asymmetric characteristics of the channel, we use the population dynamics DE combined with DE formulas for asymmetric channels to obtain the belief propagation (BP) thresholds. Additionally, we also evaluate the asymptotic performance of spatially coupled LDPC codes for two-way relay channels. The results indicate that the spatially coupled codes yield improvements in the BP threshold compared with corresponding uncoupled codes for two-way relay channels.

    DOI: 10.1109/TCOMM.2020.2987891

    Scopus

  92. Capacity of Quantum Private Information Retrieval with Colluding Servers Reviewed International coauthorship

    Song S., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2020-June   page: 1077 - 1082   2020.6

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    Quantum private information retrieval (QPIR) is a protocol that a user retrieves one of f files from non-communicating n servers by downloading quantum systems without revealing the identity of the target file. As variants of the QPIR with stronger security requirements, the symmetric QPIR is that the files except for the target file are not leaked to the user, and the t-private QPIR is that the identity of the target file is kept secret even if at most t servers may collude to reveal the identity. The QPIR capacity is the maximum ratio of the one file size to the size of downloaded quantum systems, and we prove that the symmetric t-private QPIR capacity is min {1, 2(n - t)/n} for any 1 ≤ t < n. We construct a capacity-achieving QPIR protocol by the stabilizer formalism and prove the optimality of our protocol. The proposed capacity is greater than the classical counterpart.

    DOI: 10.1109/ISIT44484.2020.9174005

    Scopus

  93. Erratum: Secure Network Code for Adaptive and Active Attacks with No-Randomness in Intermediate Nodes (IEEE Transactions on Information Theory ( 2020) 66:3 (1428–1448) DOI: 10.1109/TIT.2019.2957078) Reviewed International coauthorship

    Cai N., Hayashi M.

    IEEE Transactions on Information Theory   Vol. 66 ( 6 )   2020.6

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    In the proof of Theorem 5, we stated that Eq. (47) follows from Eq. (59) of Lemma 4. However, the derivation of Eq. (59) is incorrect, and the inequality used in the derivation of Eq. (47) is not Eq. (59). Eq. (47) follows from another inequality. This correction fixes the error of our derivation of Eq. (47).

    DOI: 10.1109/TIT.2020.2979957

    Scopus

  94. Permutation Enhances Classical Communication Assisted by Entangled States Reviewed International coauthorship

    Wang K., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2020-June   page: 1840 - 1845   2020.6

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    We give a capacity formula for the classical communication over a noisy quantum channel, when local operations and global permutations allowed in the encoding and bipartite states preshared between the sender and the receiver. The two endpoints of this formula are the Holevo capacity (without entanglement assistance) and the entanglement assisted capacity (with unlimited entanglement assistance). What's more, we show that the capacity satisfies the strong converse property and thus the formula serves as a sharp dividing line between achievable and unachievable rates of communication. We prove that the difference between the assisted capacity and the Holevo capacity is upper bounded by the discord of formation of the preshared state. As examples, we derive analytically the classical capacity of various quantum channels of interests. Our result witnesses the power of random permutation in classical communication, whenever entanglement assistance is available.

    DOI: 10.1109/ISIT44484.2020.9174125

    Scopus

  95. Classical Mechanism is Optimal in Classical-Quantum Differentially Private Mechanisms Reviewed International coauthorship

    Yoshida Y., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2020-June   page: 1973 - 1977   2020.6

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    Differential privacy (DP) is an influential privacy measure and has been studied to protect private data. DP has been often studied in classical probability theory, but few researchers studied quantum versions of DP. In this paper, we consider classical-quantum DP mechanisms which (i) convert binary private data to quantum states and (ii) satisfy a quantum version of the DP constraint. The class of classical-quantum DP mechanisms contains classical DP mechanisms. As a main result, we show that some classical DP mechanism optimizes any information quantity satisfying the information processing inequality. Therefore, the performance of classical DP mechanisms attains that of classical-quantum DP mechanisms.

    DOI: 10.1109/ISIT44484.2020.9174484

    Scopus

  96. LOCC estimator for pure state model in quantum parameter estimation with nuisance parameters (New Developments in Statistical Model) Reviewed International coauthorship

    RIMS Kokyuroku   Vol. 2157   page: 104 - 116   2020.6

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    CiNii Research

  97. Capacity of Quantum Private Information Retrieval with Colluding Servers Reviewed International coauthorship

        2020.6

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  98. Asymptotic properties for Markovian dynamics in quantum theory and general probabilistic theories Reviewed International coauthorship

    Yoshida Y., Hayashi M.

    Journal of Physics A: Mathematical and Theoretical   Vol. 53 ( 21 )   2020.5

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    We address asymptotic decoupling in the context of Markovian quantum dynamics. Asymptotic decoupling is an asymptotic property on a bipartite quantum system, and asserts that any correlation between two quantum systems is broken after a sufficiently long time passes. In this paper, we show that asymptotic decoupling is equivalent to local mixing which asserts the convergence to a unique stationary state on at least one quantum system. If dynamics is asymptotically decoupling, any correlation between two quantum systems is broken exponentially. Also, we give a criterion of mixing that is a system of linear equations. All results in this paper are proved in the framework of general probabilistic theories, but we also summarize them in quantum theory.

    DOI: 10.1088/1751-8121/ab8599

    Scopus

  99. Two-Way Physical Layer Security Protocol for Gaussian Channels Reviewed International coauthorship

    Hayashi M., Vazquez-Castro Á.

    IEEE Transactions on Communications   Vol. 68 ( 5 ) page: 3068 - 3078   2020.5

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    In this paper we propose a two-way protocol of physical layer security using the method of privacy amplification against eavesdroppers. First we justify our proposed protocol by analyzing the physical layer security provided by the classic wiretap channel model (i.e. one-way protocol). In the Gaussian channels, the classic one-way protocol requires Eve's channel to be degraded w.r.t. Bob's channel. However, this channel degradation condition depends on Eve's location and whether Eve's receiving antenna is more powerful than Bob's. To overcome this limitation, we introduce a two-way protocol inspired in IEEE TIT (1993) that eliminates the channel degradation condition. In the proposed two-way protocol, on a first phase, via Gaussian channel, Bob sends randomness to Alice, which is partially leaked to Eve. Then, on a second phase, Alice transmits information to Bob over a public noiseless channel. We derive the secrecy capacity of the two-way protocol when the channel to Eve is also Gaussian. We show that the capacity of the two-way protocol is always positive. We present numerical values of the capacities illustrating the gains obtained by our proposed protocol. We apply our result to simple yet realistic models of satellite communication channels.

    DOI: 10.1109/TCOMM.2020.2973618

    Scopus

  100. Finite-Length Analyses for Source and Channel Coding on Markov Chains. Reviewed International coauthorship

    Hayashi M, Watanabe S

    Entropy (Basel, Switzerland)   Vol. 22 ( 4 )   2020.4

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    We derive finite-length bounds for two problems with Markov chains: source coding with side-information where the source and side-information are a joint Markov chain and channel coding for channels with Markovian conditional additive noise. For this purpose, we point out two important aspects of finite-length analysis that must be argued when finite-length bounds are proposed. The first is the asymptotic tightness, and the other is the efficient computability of the bound. Then, we derive finite-length upper and lower bounds for the coding length in both settings such that their computational complexity is low. We argue the first of the above-mentioned aspects by deriving the large deviation bounds, the moderate deviation bounds, and second-order bounds for these two topics and show that these finite-length bounds achieve the asymptotic optimality in these senses. Several kinds of information measures for transition matrices are introduced for the purpose of this discussion.

    DOI: 10.3390/e22040460

    Scopus

    PubMed

  101. Application of the Resource Theory of Channels to Communication Scenarios. Reviewed International coauthorship

    Takagi R, Wang K, Hayashi M

    Physical review letters   Vol. 124 ( 12 ) page: 120502   2020.3

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    DOI: 10.1103/PhysRevLett.124.120502

    Scopus

    PubMed

  102. Secure network code for adaptive and active attacks with no-randomness in intermediate nodes Reviewed International coauthorship

    Cai N., Hayashi M.

    IEEE Transactions on Information Theory   Vol. 66 ( 3 ) page: 1428 - 1448   2020.3

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE Transactions on Information Theory  

    DOI: 10.1109/TIT.2019.2957078

    Scopus

  103. Secure Quantum Network Code without Classical Communication Reviewed International coauthorship

    Song S., Hayashi M.

    IEEE Transactions on Information Theory   Vol. 66 ( 2 ) page: 1178 - 1192   2020.2

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    DOI: 10.1109/TIT.2019.2933422

    Scopus

  104. Physical Layer Security Protocol for Poisson Channels for Passive Man-in-the-Middle Attack Reviewed International coauthorship

    Hayashi M., Vazquez-Castro, A.

    IEEE Transactions on Information Forensics and Security   Vol. 15   page: 2295 - 2305   2020

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE Transactions on Information Forensics and Security  

    DOI: 10.1109/TIFS.2019.2963771

    Scopus

  105. Quantifying Time-Varying Sources in Magnetoencephalography -- A Discrete Approach Reviewed International coauthorship

      Vol. 14   page: 1379 - 1408   2020

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  106. Efficient Verification of Pure Quantum States in the Adversarial Scenario. Reviewed International coauthorship

    Zhu H, Hayashi M

    Physical review letters   Vol. 123 ( 26 ) page: 260504   2019.12

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    DOI: 10.1103/PhysRevLett.123.260504

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    PubMed

  107. General framework for verifying pure quantum states in the adversarial scenario Reviewed International coauthorship

    Zhu H, Hayashi M

    Physical Review A   Vol. 100 ( 6 )   2019.12

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    DOI: 10.1103/PhysRevA.100.062335

    Scopus

  108. Efficient verification of hypergraph states Reviewed International coauthorship

    Zhu H, Hayashi M

    Physical Review Applied   Vol. 12 ( 5 )   2019.11

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    DOI: 10.1103/PhysRevApplied.12.054047

    Scopus

  109. Perfect discrimination of non-orthogonal separable pure states on bipartite system in general probabilistic theory Reviewed International coauthorship

    Arai H.,Yoshida Y., Hayashi M.

    Journal of Physics A: Mathematical and Theoretical   Vol. 52 ( 46 )   2019.10

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Physics A: Mathematical and Theoretical  

    DOI: 10.1088/1751-8121/ab4b64

    Scopus

  110. Quantum computational universality of hypergraph states with Pauli-X and Z basis measurements. Reviewed International coauthorship

    Takeuchi Y, Morimae T, Hayashi M

    Scientific reports   Vol. 9 ( 1 ) page: 13585   2019.9

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Scientific Reports  

    DOI: 10.1038/s41598-019-49968-3

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    PubMed

  111. Second Order Analysis for Joint Source-Channel Coding With General Channel and Markovian Source Reviewed International coauthorship

    Yaguchi Ryo, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 65 ( 9 ) page: 5750-5770   2019.9

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    DOI: 10.1109/TIT.2019.2917200

    Web of Science

  112. Optimal verification and fidelity estimation of maximally entangled states Reviewed International coauthorship

    Zhu Huangjun, Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 99 ( 5 )   2019.5

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    DOI: 10.1103/PhysRevA.99.052346

    Web of Science

    Scopus

  113. Attaining the Ultimate Precision Limit in Quantum State Estimation Reviewed International coauthorship

    Yang Y.,Chiribella G., Hayashi M.

    Communications in Mathematical Physics   Vol. 368 ( 1 ) page: 223-293   2019.5

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00220-019-03433-4

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  114. Physical layer security for rf satellite channels in the finite-length regime Reviewed International coauthorship

    Vazquez-Castro A., Hayashi M.

    IEEE Transactions on Information Forensics and Security   Vol. 14 ( 4 ) page: 981-993   2019.4

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    DOI: 10.1109/TIFS.2018.2868538

    Scopus

  115. Correction to 'Quantum stopwatch: how to store time in a quantum memory'. Reviewed International coauthorship

    Yang Y, Chiribella G, Hayashi M

    Proceedings. Mathematical, physical, and engineering sciences   Vol. 475 ( 2223 ) page: 20190052   2019.3

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    DOI: 10.1098/rspa.2019.0052

    PubMed

  116. Secure computation-and-forward communication with linear codes Reviewed International coauthorship

    Hayashi M. Wadayama T. Vazuez-Castro A.

    2018 IEEE Information Theory Workshop, ITW 2018     2019.1

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    DOI: 10.1109/ITW.2018.8613524

    Scopus

  117. Secure quantum network code without classical communication Reviewed International coauthorship

    Song S. Hayashi M

    2018 IEEE Information Theory Workshop, ITW 2018     2019.1

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    DOI: 10.1109/ITW.2018.8613516

    Scopus

  118. Secure physical layer network coding versus secure network coding Invited Reviewed International coauthorship

    Hayashi M.

    2018 IEEE Information Theory Workshop, ITW 2018     2019.1

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    DOI: 10.1109/ITW.2018.8613305

    Scopus

  119. Resolving unattainable Cramer-Rao bounds for quantum sensors Reviewed International coauthorship

    Hayashi M., Vinjanampathy S., Kwek L.-C.

    Journal of Physics B: Atomic, Molecular and Optical Physics   Vol. 52 ( 1 )   2019.1

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1361-6455/aaf348

    Scopus

  120. Universal Channel Coding for General Output Alphabet Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 65 ( 1 ) page: 302-321   2019.1

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2018.2877456

    Web of Science

    Scopus

  121. Asymptotically Decoupling and Mixing Properties in Quantum System Reviewed International coauthorship

    Yoshida Y., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2018-June   page: 261-265   2018.8

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    DOI: 10.1109/ISIT.2018.8437491

    Scopus

  122. Universal Construction of Cheater-Identifiable Secret Sharing Against Rushing Cheaters Based on Message Authentication Reviewed International coauthorship

    Hayashi M., Koshiba T.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2018-June   page: 2614-2618   2018.8

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1109/ISIT.2018.8437751

    Scopus

  123. Secure Communication over Fully Quantum Gel' Fand-Pinsker Wiretap Channel Reviewed International coauthorship

    Anshu A., Hayashi M., Warsi N.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2018-June   page: 2679-2683   2018.8

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1109/ISIT.2018.8437744

    Scopus

  124. Compression for Qubit Clocks Reviewed International coauthorship

    Yang Y., Chiribella G., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings   Vol. 2018-June   page: 2476-2480   2018.8

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1109/ISIT.2018.8437783

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  125. Asymptotic and non-asymptotic analysis for a hidden Markovian process with a quantum hidden system Reviewed International coauthorship

    Hayashi M., Yoshida Y.

    Journal of Physics A: Mathematical and Theoretical   Vol. 51 ( 33 )   2018.7

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1751-8121/aacde9

    Scopus

  126. Quantum network code for multiple-unicast network with quantum invertible linear operations Reviewed International coauthorship

    Song S., Hayashi M.

    Leibniz International Proceedings in Informatics, LIPIcs   Vol. 111   page: 10:1-10:20   2018.7

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.4230/LIPIcs.TQC.2018.10

    Scopus

  127. Compression for Quantum Population Coding Reviewed International coauthorship

    Yang Y., Bai G., Chiribella G., Hayashi M.

    IEEE Transactions on Information Theory   Vol. 64 ( 7 ) page: 4766-4783   2018.7

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    DOI: 10.1109/TIT.2017.2788407

    Scopus

  128. Second-Order Asymptotics of Conversions of Distributions and Entangled States Based on Rayleigh-Normal Probability Distributions (vol 63, pg 1829, 2017) Reviewed International coauthorship

    Kumagai Wataru, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 64 ( 7 ) page: 5455 - 5455   2018.7

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2017.2786669

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  129. Self-guaranteed measurement-based quantum computation Reviewed International coauthorship

    Hayashi Masahito, Hajdusek Michal

    PHYSICAL REVIEW A   Vol. 97 ( 5 )   2018.5

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    DOI: 10.1103/PhysRevA.97.052308

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  130. Analysis of Remaining Uncertainties and Exponents Under Various Conditional Renyi Entropies Reviewed International coauthorship

    Tan Vincent Y. F., Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 64 ( 5 ) page: 3734-3755   2018.5

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    DOI: 10.1109/TIT.2018.2792495

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  131. Quantum stopwatch: how to store time in a quantum memory. International coauthorship

    Yang Y, Chiribella G, Hayashi M

    Proceedings. Mathematical, physical, and engineering sciences   Vol. 474 ( 2213 ) page: 20170773   2018.5

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    DOI: 10.1098/rspa.2017.0773

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  132. Axiomatic and operational connections between the l1 -norm of coherence and negativity Reviewed International coauthorship

    Zhu H.

    Physical Review A   Vol. 97 ( 2 )   2018.2

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    DOI: 10.1103/PhysRevA.97.022342

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  133. Minimum Rates of Approximate Sufficient Statistics Reviewed International coauthorship

    Hayashi Masahito, Tan Vincent Y. F.

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 64 ( 2 ) page: 875-888   2018.2

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    DOI: 10.1109/TIT.2017.2775612

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  134. Operational Interpretation of Renyi Information Measures via Composite Hypothesis Testing Against Product and Markov Distributions Reviewed International coauthorship

    Tomamichel Marco, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 64 ( 2 ) page: 1064-1082   2018.2

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    DOI: 10.1109/TIT.2017.2776900

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  135. Universally Fisher-Symmetric Informationally Complete Measurements Reviewed International coauthorship

    Zhu Huangjun, Hayashi Masahito

    PHYSICAL REVIEW LETTERS   Vol. 120 ( 3 ) page: 030404   2018.1

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    DOI: 10.1103/PhysRevLett.120.030404

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  136. Secure uniform random-number extraction via incoherent strategies Reviewed International coauthorship

    Hayashi Masahito, Zhu Huangjun

    PHYSICAL REVIEW A   Vol. 97 ( 1 )   2018.1

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    DOI: 10.1103/PhysRevA.97.012302

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  137. Single-shot secure quantum network coding on butterfly network with free public communication Reviewed International coauthorship

    Owari M., Kato G., Hayashi M.

    Quantum Science and Technology   Vol. 3 ( 1 )   2018.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/2058-9565/aa8ac4

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  138. Optimal performance of generalized heat engines with finite-size baths of arbitrary multiple conserved quantities beyond independent-and-identical-distribution scaling Reviewed International coauthorship

    Ito Kosuke, Hayashi Masahito

    PHYSICAL REVIEW E   Vol. 97 ( 1-1 ) page: 012129   2018.1

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    DOI: 10.1103/PhysRevE.97.012129

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  139. Asymptotic Analysis on Spatial Coupling Coding for Two-Way Relay Channels Reviewed International coauthorship

    Takabe Satoshi, Ishimatsu Yuta, Wadayama Tadashi, Hayashi Masahito

    2018 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 1021-1025   2018

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  140. Verification of hypergraph states Reviewed International coauthorship

    Morimae Tomoyuki, Takeuchi Yuki, Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 96 ( 6 )   2017.12

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    DOI: 10.1103/PhysRevA.96.062321

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  141. Coherence and entanglement measures based on Rnyi relative entropies International coauthorship

    Zhu Huangjun, Hayashi Masahito, Chen Lin

    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL   Vol. 50 ( 47 )   2017.11

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    DOI: 10.1088/1751-8121/aa8ffc

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  142. Verifiable fault tolerance in measurement-based quantum computation Reviewed International coauthorship

    Fujii Keisuke, Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 96 ( 3 )   2017.9

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    DOI: 10.1103/PhysRevA.96.030301

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  143. Minimum rates of approximate sufficient statistics Reviewed International coauthorship

    Hayashi M., Tan V.

    IEEE International Symposium on Information Theory - Proceedings     page: 3035-3039   2017.8

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    DOI: 10.1109/ISIT.2017.8007087

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  144. Compression for quantum population coding Reviewed International coauthorship

    Yang Y., Bai G., Chiribella G., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings     page: 1973-1977   2017.8

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    DOI: 10.1109/ISIT.2017.8006874

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  145. Secure wireless communication under spatial and local Gaussian noise assumptions Reviewed International coauthorship

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings     page: 1698-1702   2017.8

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    DOI: 10.1109/ISIT.2017.8006819

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  146. Secrecy and robustness for active attack in secure network coding Reviewed International coauthorship

    Hayashi M., Owari M., Kato G., Cai N.

    IEEE International Symposium on Information Theory - Proceedings     page: 1172-1176   2017.8

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    DOI: 10.1109/ISIT.2017.8006713

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  147. Second order analysis for joint source-channel coding with Markovian source Reviewed International coauthorship

    Yaguchi R., Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings     page: 918-922   2017.8

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    DOI: 10.1109/ISIT.2017.8006662

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  148. Finite-size effect on optimal efficiency of heat engines Reviewed International coauthorship

    Hayashi M., Tajima H.

    PHYSICAL REVIEW E   Vol. 96 ( 1 )   2017.7

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    DOI: 10.1103/PhysRevE.96.012128

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  149. Tight Asymptotic Bounds on Local Hypothesis Testing Between a Pure Bipartite State and the White Noise State Reviewed International coauthorship

    Hayashi Masahito, Owari Masaki

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 63 ( 6 ) page: 4008-4036   2017.6

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    DOI: 10.1109/TIT.2017.2687932

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  150. Universal Secure Multiplex Network Coding With Dependent and Non-Uniform Messages Reviewed International coauthorship

    Matsumoto Ryutaroh, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 63 ( 6 ) page: 3773-3782   2017.6

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    DOI: 10.1109/TIT.2017.2694012

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  151. Discrimination Power of a Quantum Detector Reviewed International coauthorship

    Hirche Christoph, Hayashi Masahito, Bagan Emilio, Calsamiglia John

    PHYSICAL REVIEW LETTERS   Vol. 118 ( 16 ) page: 160502   2017.4

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    DOI: 10.1103/PhysRevLett.118.160502

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  152. FINITE-LENGTH ANALYSIS ON TAIL PROBABILITY FOR MARKOV CHAIN AND APPLICATION TO SIMPLE HYPOTHESIS TESTING Reviewed International coauthorship

    Watanabe Shun, Hayashi Masahito

    ANNALS OF APPLIED PROBABILITY   Vol. 27 ( 2 ) page: 811-845   2017.4

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    DOI: 10.1214/16-AAP1216

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  153. Random Number Conversion and LOCC Conversion via Restricted Storage Reviewed International coauthorship

    Kumagai Wataru, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 63 ( 4 ) page: 2504-2532   2017.4

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    DOI: 10.1109/TIT.2017.2657514

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  154. Measurement-based formulation of quantum heat engines Reviewed International coauthorship

    Hayashi Masahito, Tajima Hiroyasu

    PHYSICAL REVIEW A   Vol. 95 ( 3 )   2017.3

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    DOI: 10.1103/PhysRevA.95.032132

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  155. Second-Order Asymptotics of Conversions of Distributions and Entangled States Based on Rayleigh-Normal Probability Distributions Reviewed International coauthorship

    Kumagai Wataru, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 63 ( 3 ) page: 1829-1857   2017.3

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    DOI: 10.1109/TIT.2016.2645223

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  156. Equivocations, Exponents, and Second-Order Coding Rates Under Various Renyi Information Measures Reviewed International coauthorship

    Hayashi Masahito, Tan Vincent Y. F.

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 63 ( 2 ) page: 975-1005   2017.2

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    DOI: 10.1109/TIT.2016.2636154

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  157. Mathematical Formulation of Quantum Systems International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 1-24   2017

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  158. Limits and Linear Algebra International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 607-625   2017

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  159. Information-theoretic Physical Layer Security for Satellite Channels Reviewed International coauthorship

    Vazquez-Castro Angeles, Hayashi Masahito

    2017 IEEE AEROSPACE CONFERENCE     page: .   2017

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  160. Finite-block-length analysis in classical and quantum information theory International coauthorship

    HAYASHI Masahito

    Proceedings of the Japan Academy, Series B   Vol. 93 ( 3 ) page: 99 - 124   2017

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Japan Academy  

    <p>Coding technology is used in several information processing tasks. In particular, when noise during transmission disturbs communications, coding technology is employed to protect the information. However, there are two types of coding technology: coding in classical information theory and coding in quantum information theory. Although the physical media used to transmit information ultimately obey quantum mechanics, we need to choose the type of coding depending on the kind of information device, classical or quantum, that is being used. In both branches of information theory, there are many elegant theoretical results under the ideal assumption that an infinitely large system is available. In a realistic situation, we need to account for finite size effects. The present paper reviews finite size effects in classical and quantum information theory with respect to various topics, including applied aspects.</p>

    DOI: 10.2183/pjab.93.007

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  161. Asymptotic Analysis for Hidden Markovian Process with Quantum Hidden System Reviewed International coauthorship

    Hayashi Masahito

    2017 IEEE INFORMATION THEORY WORKSHOP (ITW)     page: 469-473   2017

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  162. Quantum Measurements and State Reduction International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 323-356   2017

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  163. Quantum Information Theory Mathematical Foundation Second Edition Prologue International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: XXXV-XLIII   2017

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  164. Quantum Information Theory Mathematical Foundation Second Edition Preface to the Japanese Edition International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: XIII-XIV   2017

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  165. Quantum Information Theory Mathematical Foundation Second Edition Preface International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: VII-IX   2017

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  166. Quantum Information Geometry and Quantum Estimation International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 253-322   2017

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  167. Quantum Hypothesis Testing and Discrimination of Quantum States International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 95-153   2017

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  168. Postface to Japanese version International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 627-629   2017

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  169. State Evolution and Trace-Preserving Completely Positive Maps Reviewed International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 197-251   2017

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  170. Source Coding in Quantum Systems International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 569-605   2017

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  171. Information Quantities and Parameter Estimation in Classical Systems International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 25-94   2017

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  172. Entanglement and Locality Restrictions International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 357-490   2017

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  173. Classical-Quantum Channel Coding (Message Transmission) International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 155-195   2017

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  174. Analysis of Quantum Communication Protocols International coauthorship

    Hayashi Masahito

    QUANTUM INFORMATION THEORY: MATHEMATICAL FOUNDATION, 2ND EDITION     page: 491-568   2017

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  175. Single-Shot Secure Quantum Network Coding for General Multiple Unicast Network with Free Public Communication Reviewed International coauthorship

    Kato Go, Owari Masaki, Hayashi Masahito

    INFORMATION THEORETIC SECURITY, ICITS 2017   Vol. 10681   page: 166-187   2017

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/978-3-319-72089-0_10

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  176. Correlation detection and an operational interpretation of the Renyi mutual information International coauthorship

    Hayashi Masahito, Tomamichel Marco

    JOURNAL OF MATHEMATICAL PHYSICS   Vol. 57 ( 10 ) page: 102201   2016.10

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    DOI: 10.1063/1.4964755

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  177. Fourier Analytic Approach to Quantum Estimation of Group Action Reviewed International coauthorship

    Hayashi Masahito

    COMMUNICATIONS IN MATHEMATICAL PHYSICS   Vol. 347 ( 1 ) page: 3-82   2016.10

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    DOI: 10.1007/s00220-016-2738-0

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  178. Optimal Compression for Identically Prepared Qubit States. Reviewed International coauthorship

    Yang Y, Chiribella G, Hayashi M

    Physical review letters   Vol. 117 ( 9 ) page: 090502   2016.8

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    DOI: 10.1103/PhysRevLett.117.090502

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  179. INFORMATION GEOMETRY APPROACH TO PARAMETER ESTIMATION IN MARKOV CHAINS Reviewed International coauthorship

    Hayashi Masahito, Watanabe Shun

    ANNALS OF STATISTICS   Vol. 44 ( 4 ) page: 1495-1535   2016.8

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    DOI: 10.1214/15-AOS1420

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  180. Secret Key Agreement: General Capacity and Second-Order Asymptotics Reviewed International coauthorship

    Hayashi Masahito, Tyagi Himanshu, Watanabe Shun

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 62 ( 7 ) page: 3796-3810   2016.7

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    DOI: 10.1109/TIT.2016.2567440

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  181. Security Analysis of epsilon-Almost Dual Universal(2) Hash Functions: Smoothing of Min Entropy Versus Smoothing of Renyi Entropy of Order 2 Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 62 ( 6 ) page: 3451-3476   2016.6

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    DOI: 10.1109/TIT.2016.2535174

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  182. Secure Multiplex Coding With Dependent and Non-Uniform Multiple Messages Reviewed International coauthorship

    Hayashi Masahito, Matsumoto Ryutaroh

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 62 ( 5 ) page: 2355-2409   2016.5

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    DOI: 10.1109/TIT.2016.2530088

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  183. Optimal decoy intensity for decoy quantum key distribution Reviewed International coauthorship

    Hayashi Masahito

    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL   Vol. 49 ( 16 )   2016.4

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    DOI: 10.1088/1751-8113/49/16/165301

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  184. More Efficient Privacy Amplification With Less Random Seeds via Dual Universal Hash Function Reviewed International coauthorship

    Hayashi Masahito, Tsurumaru Toyohiro

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 62 ( 4 ) page: 2213-2232   2016.4

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    DOI: 10.1109/TIT.2016.2526018

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  185. Uniform Random Number Generation From Markov Chains: Non-Asymptotic and Asymptotic Analyses Reviewed International coauthorship

    Hayashi Masahito, Watanabe Shun

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 62 ( 4 ) page: 1795-1822   2016.4

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    DOI: 10.1109/TIT.2016.2530084

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  186. Universal Steering Criteria. Reviewed International coauthorship

    Zhu H, Hayashi M, Chen L

    Physical review letters   Vol. 116 ( 7 ) page: 070403   2016.2

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    DOI: 10.1103/PhysRevLett.116.070403

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  187. Role of Quantum Information Theory in Information Theory International coauthorship

    HAYASHI Masahito

    IEICE ESS Fundamentals Review   Vol. 10 ( 1 ) page: 4 - 13   2016

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers  

    There are several interesting results in quantum information theory behind the recent remarkable progress in information theory. This article focuses on the contribution of quantum information theory to information theory, and explains the role of quantum information theory in the progress in information theory, which indicates that the results of quantum information theory are applicable to other research areas.

    DOI: 10.1587/essfr.10.1_4

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  188. Operational Interpretation of Renyi Conditional Mutual Information via Composite Hypothesis Testing Against Markov Distributions Reviewed International coauthorship

    Tomamichel Marco, Hayashi Masahito

    2016 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY     page: 585-589   2016

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  189. Remaining Uncertainties and Exponents under Renyi Information Measures Reviewed International coauthorship

    Hayashi Masahito, Tan Vincent Y. F.

    2016 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY     page: 1536-1540   2016

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  190. Asymmetric Evaluations of Erasure and Undetected Error Probabilities Reviewed International coauthorship

    Hayashi Masahito, Tan Vincent Y. F.

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 61 ( 12 ) page: 6560-6577   2015.12

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    DOI: 10.1109/TIT.2015.2495258

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  191. Local Hypothesis Testing Between a Pure Bipartite State and the White Noise State Reviewed International coauthorship

    Owari Masaki, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 61 ( 12 ) page: 6995-7011   2015.12

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    DOI: 10.1109/TIT.2015.2492958

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  192. Verifiable Measurement-Only Blind Quantum Computing with Stabilizer Testing. Reviewed International coauthorship

    Hayashi M, Morimae T

    Physical review letters   Vol. 115 ( 22 ) page: 220502   2015.11

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    DOI: 10.1103/PhysRevLett.115.220502

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  193. Asymptotic compatibility between local-operations-and-classical-communication conversion and recovery Reviewed International coauthorship

    Ito Kosuke, Kumagai Wataru, Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 92 ( 5 )   2015.11

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    DOI: 10.1103/PhysRevA.92.052308

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  194. QUANTUM MERLIN-ARTHUR WITH CLIFFORD ARTHUR Reviewed International coauthorship

    Morimae Tomoyuki, Hayashi Masahito, Nishimura Harumichi, Fujii Keisuke

    QUANTUM INFORMATION & COMPUTATION   Vol. 15 ( 15-16 ) page: 1420-1430   2015.11

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  195. Error-Control Coding for Physical-Layer Secrecy Reviewed International coauthorship

    Bloch Matthieu, Hayashi Masahito, Thangaraj Andrew

    PROCEEDINGS OF THE IEEE   Vol. 103 ( 10 ) page: 1725-1746   2015.10

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    DOI: 10.1109/JPROC.2015.2463678

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  196. Quantum Wiretap Channel With Non-Uniform Random Number and Its Exponent and Equivocation Rate of Leaked Information Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 61 ( 10 ) page: 5595-5622   2015.10

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    DOI: 10.1109/TIT.2015.2464215

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  197. Precise Evaluation of Leaked Information with Secure Randomness Extraction in the Presence of Quantum Attacker Reviewed International coauthorship

    Hayashi Masahito

    COMMUNICATIONS IN MATHEMATICAL PHYSICS   Vol. 333 ( 1 ) page: 335-350   2015.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00220-014-2174-y

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  198. 21aAJ-7 Formularization of work extraction as a measurement process Reviewed International coauthorship

    Tajima H., Hayashi M.

    Meeting Abstracts of the Physical Society of Japan   Vol. 70.1 ( 0 ) page: 2811   2015

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.70.1.0_2811

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  199. 17aCX-8 Derivation of optimal efficiency of quantum heat engines based on strong large deviation theory Reviewed International coauthorship

    Tajima H., Hayashi M.

    Meeting Abstracts of the Physical Society of Japan   Vol. 70.2 ( 0 ) page: 2648   2015

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.70.2.0_2648

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  200. Correlation Detection and an Operational Interpretation of the Renyi Mutual Information Reviewed International coauthorship

    Hayashi Masahito, Tomamichel Marco

    2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 1447-1451   2015

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  201. Erasure and Undetected Error Probabilities in the Moderate Deviations Regime Reviewed International coauthorship

    Hayashi Masahito, Tan Vincent Y. F.

    2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 1821-1825   2015

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  202. Equivocations and Exponents under Various Renyi Information Measures Reviewed International coauthorship

    Hayashi Masahito, Tan Vincent Y. F.

    2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 281-285   2015

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  203. More Efficient Privacy Amplification with Less Random Seeds Reviewed International coauthorship

    Hayashi Masahito, Tsurumaru Toyohiro

    2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 1786-1790   2015

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  204. Tight asymptotic bounds on local hypothesis testing between a pure bipartite state and the white noise state Reviewed International coauthorship

    Hayashi Masahito, Owari Masaki

    2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 691-695   2015

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    Language:English   Publishing type:Research paper (scientific journal)  

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  205. Large Deviation Analysis for Quantum Security via Smoothing of Renyi Entropy of Order 2 Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 60 ( 10 ) page: 6702-6732   2014.10

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    DOI: 10.1109/TIT.2014.2337884

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  206. Asymptotic local hypothesis testing between a pure bipartite state and the completely mixed state Reviewed International coauthorship

    Owari Masaki, Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 90 ( 3 )   2014.9

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    DOI: 10.1103/PhysRevA.90.032327

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  207. AT-2-1 Finite-length analysis on secret random number generation and data compression Invited International coauthorship

    Hayashi Masahito

    Proceedings of the Society Conference of IEICE   Vol. 2014   page: "SS-21"-"SS-24"   2014.9

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  208. Relating different quantum generalizations of the conditional Renyi entropy Reviewed International coauthorship

    Tomamichel Marco, Berta Mario, Hayashi Masahito

    JOURNAL OF MATHEMATICAL PHYSICS   Vol. 55 ( 8 )   2014.8

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    DOI: 10.1063/1.4892761

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  209. Security analysis of the decoy method with the Bennett-Brassard 1984 protocol for finite key lengths Reviewed International coauthorship

    Hayashi Masahito, Nakayama Ryota

    NEW JOURNAL OF PHYSICS   Vol. 16   2014.6

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    DOI: 10.1088/1367-2630/16/6/063009

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  210. Random Number Conversion via Restricted Storage Reviewed International coauthorship

    Kumagai Wataru, Hayashi Masahito

    2014 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 2047-2051   2014

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  211. Asymptotic Reversibility of LOCC Conversions Reviewed International coauthorship

    Ito Kosuke, Kumagai Wataru, Hayashi Masahito

    2014 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 531-535   2014

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  212. Secret Key Agreement: General Capacity and Second-Order Asymptotics Reviewed International coauthorship

    Hayashi Masahito, Tyagi Himanshu, Watanabe Shun

    2014 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 1136-1140   2014

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  213. Information Geometry Approach to Parameter Estimation in Markov Chains Reviewed International coauthorship

    Hayashi Masahito, Watanabe Shun

    2014 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 1091-1095   2014

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  214. A duality relation connecting different quantum generalizations of the conditional Renyi entropy Reviewed International coauthorship

    Tomamichel Marco, Berta Mario, Hayashi Masahito

    2014 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT)     page: 731-735   2014

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  215. Finite-length analysis for secret random number generation and coding theorems Reviewed International coauthorship

    Hayashi Masahito

    2014 INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY AND ITS APPLICATIONS (ISITA)     page: 322-326   2014

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  216. Non-Asymptotic and Asymptotic Analyses on Markov Chains in Several Problems Reviewed International coauthorship

    Hayashi Masahito, Watanabe Shun

    2014 INFORMATION THEORY AND APPLICATIONS WORKSHOP (ITA)     page: 328-337   2014

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  217. Moderate deviations for joint source-channel coding of systems with Markovian memory Reviewed International coauthorship

    Tan V.

    IEEE International Symposium on Information Theory - Proceedings     page: 1687-1691   2014

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    DOI: 10.1109/ISIT.2014.6875121

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  218. Finite-length Analysis on Tail probability and Simple Hypothesis Testing for Markov Chain Reviewed International coauthorship

    Watanabe Shun, Hayashi Masahito

    2014 INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY AND ITS APPLICATIONS (ISITA)     page: 196-200   2014

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  219. Strong converse and second-order asymptotics of channel resolvability Reviewed International coauthorship

    Watanabe S.

    IEEE International Symposium on Information Theory - Proceedings     page: 1882-1886   2014

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    DOI: 10.1109/ISIT.2014.6875160

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  220. Universal channel coding with continuous output system Reviewed International coauthorship

    Hayashi Masahito

    2014 INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY AND ITS APPLICATIONS (ISITA)     page: 21-25   2014

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  221. Strong Converse for a Degraded Wiretap Channel via Active Hypothesis Testing Reviewed International coauthorship

    Hayashi Masahito, Tyagi Himanshu, Watanabe Shun

    2014 52ND ANNUAL ALLERTON CONFERENCE ON COMMUNICATION, CONTROL, AND COMPUTING (ALLERTON)     page: 148-151   2014

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  222. Tight Exponential Analysis of Universally Composable Privacy Amplification and Its Applications Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 59 ( 11 ) page: 7728-7746   2013.11

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    DOI: 10.1109/TIT.2013.2278971

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  223. A Hierarchy of Information Quantities for Finite Block Length Analysis of Quantum Tasks Reviewed International coauthorship

    Tomamichel Marco, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 59 ( 11 ) page: 7693-7710   2013.11

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    DOI: 10.1109/TIT.2013.2276628

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  224. Entanglement concentration is irreversible. Reviewed International coauthorship

    Kumagai W, Hayashi M

    Physical review letters   Vol. 111 ( 13 ) page: 130407   2013.9

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    DOI: 10.1103/PhysRevLett.111.130407

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  225. ベクトルの近似直交化を用いた高階線型常微分方程式の整数型解法 (次世代計算科学の基盤技術とその展開 : RIMS研究集会報告集) Reviewed International coauthorship

    坂口 文則, 林 正人

    数理解析研究所講究録   ( 1848 ) page: 132 - 146   2013.8

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  226. ベクトルの近似直交化を用いた高階線型常微分方程式の整数型解法 (次世代計算科学の基盤技術とその展開) Reviewed International coauthorship

    坂口 文則, 林 正人

    数理解析研究所講究録   Vol. 1848   page: 132 - 146   2013.8

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    CiNii Research

  227. Dual Universality of Hash Functions and Its Applications to Quantum Cryptography Reviewed International coauthorship

    Tsurumaru Toyohiro, Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 59 ( 7 ) page: 4700-4717   2013.7

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    DOI: 10.1109/TIT.2013.2250576

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  228. Quantum Hypothesis Testing for Gaussian States: Quantum Analogues of chi(2), t-, and F-Tests Reviewed International coauthorship

    Kumagai Wataru, Hayashi Masahito

    COMMUNICATIONS IN MATHEMATICAL PHYSICS   Vol. 318 ( 2 ) page: 535-574   2013.3

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    DOI: 10.1007/s00220-013-1678-1

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  229. Second Order Asymptotics for Random Number Generation Reviewed International coauthorship

    Kumagai Wataru, Hayashi Masahito

    2013 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS (ISIT)     page: 1506-+   2013

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  230. Non-Asymptotic Bounds on Fixed Length Source Coding for Markov Chains Reviewed International coauthorship

    Hayashi Masahito, Watanabe Shun

    2013 51ST ANNUAL ALLERTON CONFERENCE ON COMMUNICATION, CONTROL, AND COMPUTING (ALLERTON)     page: 875-882   2013

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  231. NONDISTILLABLE ENTANGLEMENT GUARANTEES DISTILLABLE ENTANGLEMENT International coauthorship

    Chen Lin, Hayashi Masahito

    INTERNATIONAL JOURNAL OF MODERN PHYSICS B   Vol. 26 ( 27n28 ) page: 1243008   2012.9

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    DOI: 10.1142/s0217979212430084

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  232. Concise and tight security analysis of the Bennett-Brassard 1984 protocol with finite key lengths Reviewed International coauthorship

    Hayashi Masahito, Tsurumaru Toyohiro

    NEW JOURNAL OF PHYSICS   Vol. 14   2012.9

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    DOI: 10.1088/1367-2630/14/9/093014

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  233. Precise evaluation of leaked information with universal(2) privacy amplification in the presence of quantum attacker International coauthorship

    Hayashi Masahito

    2012 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS (ISIT)     page: 890-894   2012

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  234. Quantum wiretap channel with non-uniform random number and its exponent of leaked information Reviewed International coauthorship

    Hayashi Masahito

    2012 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS (ISIT)     page: 895-899   2012

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  235. Explanation of Second-Order Asymptotic Theory Via Information Spectrum Method International coauthorship

    HAYASHI Masahito

    IEICE ESS Fundamentals Review   Vol. 6 ( 1 ) page: 12 - 25   2012

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    We explain second-order asymptotic theory via the information spectrum method. From a unified viewpoint based on the generality of the information spectrum method, we consider second-order asymptotic theory for use in fixed-length data compression, uniform random number generation, and channel coding. Additionally, we discuss its application to quantum cryptography, folklore in source coding, and security analysis.

    DOI: 10.1587/essfr.6.12

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  236. Secure Multiplex Coding with Dependent and Non-Uniform Multiple Messages Reviewed International coauthorship

    Hayashi Masahito, Matsumoto Ryutaroh

    2012 50TH ANNUAL ALLERTON CONFERENCE ON COMMUNICATION, CONTROL, AND COMPUTING (ALLERTON)     page: 954-959   2012

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  237. Large deviation theory for non-regular location shift family Reviewed International coauthorship

    Hayashi Masahito

    ANNALS OF THE INSTITUTE OF STATISTICAL MATHEMATICS   Vol. 63 ( 4 ) page: 689-716   2011.8

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    DOI: 10.1007/s10463-009-0254-0

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  238. Weaker entanglement between two parties guarantees stronger entanglement with a third party Reviewed International coauthorship

    Masahito Hayashi, Lin Chen

    Physical Review A   Vol. 84 ( 1 ) page: 012325   2011.7

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    DOI: 10.1103/PhysRevA.84.012325

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  239. Exponential Decreasing Rate of Leaked Information in Universal Random Privacy Amplification Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 57 ( 6 ) page: 3989-4001   2011.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2011.2110950

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  240. Comparison between the Cramer-Rao and the mini-max approaches in quantum channel estimation Reviewed International coauthorship

    Masahito Hayashi

    Communications in Mathematical Physics   Vol. 304 ( 3 ) page: 689-709   2011.6

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    DOI: 10.1007/s00220-011-1239-4

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  241. Discrimination of the change point in a quantum setting Reviewed International coauthorship

    Daiki Akimoto, Masahito Hayashi

    Physical Review A   Vol. 83 ( 5 ) page: 052328   2011.5

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    DOI: 10.1103/PhysRevA.83.052328

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  242. 光子個数制約の下での位相推定 Reviewed International coauthorship

    林 正人

    Progress in informatics   ( 8 ) page: 81 - 87   2011.3

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    位相推定問題についての多くの研究ではNoon 状態を入力状態として用いる方法が提案されている.理由はNoon 状態を入力状態とした場合,ある点でFisher 情報量が最大となるからである.しかし,Fisher 情報量が必ずしも達成可能な推定誤差を与えるとは限らない.本稿では,Mini-max 基準に加え,局所漸近Mini-max 基準を考え,これらの場合に,Fisher 情報量が達成可能な推定誤差を与えないことを示す.さらに,Noon 状態に代わり,漸近的に最適な入力状態を光子数に関する制約条件の下で与える.

  243. Multicopy and stochastic transformation of multipartite pure states Reviewed International coauthorship

    Lin Chen, Masahito Hayashi

    Physical Review A   Vol. 83 ( 2 ) page: 022331   2011.2

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    DOI: 10.1103/PhysRevA.83.022331

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  244. Dual universality of hash functions and its applications to quantum cryptography (ワイドバンドシステム・情報通信基礎サブソサイエティ合同研究会) Reviewed International coauthorship

    鶴丸 豊広, 林 正人

    電子情報通信学会技術研究報告. WBS, ワイドバンドシステム : IEICE technical report   Vol. 110 ( 444 ) page: 295 - 302   2011.2

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    In this paper, we introduce the concept of dual universality of hash functions and present its applications to various quantum and classical communication models including cryptography. We begin by establishing the one-to-one correspondence between a linear function family F and a code family C, and thereby defining ε-almost dual universal_2 hash functions, as a generalization of the conventional universal_2 hash functions. Then we give a security proof for the Bennett-Brassard 1984 protocol, where the Shor-Preskill-type argument is used, but nevertheless ε-almost dual universal_2 functions can be used for privacy amplification.

  245. Dual universality of hash functions and its applications to quantum cryptography (情報理論・情報通信基礎サブソサイエティ合同研究会) Reviewed International coauthorship

    鶴丸 豊広, 林 正人

    電子情報通信学会技術研究報告. IT, 情報理論   Vol. 110 ( 442 ) page: 295 - 302   2011.2

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    In this paper, we introduce the concept of dual universality of hash functions and present its applications to various quantum and classical communication models including cryptography. We begin by establishing the one-to-one correspondence between a linear function family F and a code family C, and thereby defining ε-almost dual universal_2 hash functions, as a generalization of the conventional universal_2 hash functions. Then we give a security proof for the Bennett-Brassard 1984 protocol, where the Shor-Preskill-type argument is used, but nevertheless ε-almost dual universal_2 functions can be used for privacy amplification.

  246. Universally Attainable Error and Information Exponents, and Equivocation Rate for the Broadcast Channels with Confidential Messages Reviewed International coauthorship

    Forty-Ninth Annual Allerton Conference     page: .   2011

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  247. General theory for integer-type algorithm for higher order differential equations Reviewed International coauthorship

    Fuminori Sakaguchi, Masahito Hayashi,

    Numerical Functional Analysis and Optimization   Vol. 32 ( 5 ) page: 541-582   2011

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    DOI: 10.1080/01630563.2011.557917

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  248. PRACTICAL IMPLEMENTATION AND ERROR BOUND OF INTEGER-TYPE ALGORITHM FOR HIGHER-ORDER DIFFERENTIAL EQUATIONS Reviewed International coauthorship

    Sakaguchi Fuminori, Hayashi Masahito

    NUMERICAL FUNCTIONAL ANALYSIS AND OPTIMIZATION   Vol. 32 ( 12 ) page: 1316-1364   2011

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    DOI: 10.1080/01630563.2011.595602

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  249. Phase estimation with photon number constraint Reviewed International coauthorship

    Masahito HAYASHI

    Progress of Informatics   ( 8 ) page: 81-87   2011

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    DOI: 10.2201/NiiPi.2011.8.9

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  250. Secure Multiplex Coding with a Common Message Reviewed International coauthorship

    Matsumoto Ryutaroh, Hayashi Masahito

    2011 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS (ISIT)     page: .   2011

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  251. Secure Multiplex Network Coding Reviewed International coauthorship

    Matsumoto, Ryutaroh, Hayashi, Masahito,

    2011 International Symposium on Network Coding (NetCod)     2011

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  252. Weaker entanglement between two parties guarantees stronger entanglement with a third party Reviewed International coauthorship

    林 正人

    Physical Review A   Vol. Vol, 84   page: 12325   2011

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    CiNii Research

  253. Comparison between the Cramer-Rao and the mini-max approaches in quantum channel estimation Reviewed International coauthorship

    林 正人

    Communications in Mathematical Physics   Vol. 304   page: 689 - 709   2011

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    CiNii Research

  254. Weaker entanglement between two parties guarantees stronger entanglement with a third party Reviewed International coauthorship

    林 正人

    Physical Beview A   Vol. 84   page: 12325   2011

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    CiNii Research

  255. Discrimination of the change point in a quantum setting Reviewed International coauthorship

    林 正人

    Physical Review A   Vol. 83   page: 52328   2011

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    CiNii Research

  256. Practical Implementation and Error Bound of Integer-Type Algorithm for Higher-Order Differential Equations Reviewed International coauthorship

    林 正人

    Numerical Functional Analysis and Optimization   Vol. 32   page: 1316 - 1364   2011

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    CiNii Research

  257. Phase estimation with photon number constraint," Progress of Informatics Reviewed International coauthorship

    林 正人

    Progress of Informatics   Vol. 8   page: 81 - 87   2011

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    CiNii Research

  258. Multi-copy and stochastic transformation of multipartite pure states Reviewed International coauthorship

    林 正人

    Physical Review A   Vol. Vol.83   page: 22331   2011

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    CiNii Research

  259. General theory for integer-type algorithm for higher order differential equations Reviewed International coauthorship

    林 正人

    Numerical Functional Analysis and Optimization   Vol. 32   page: 541 - 582   2011

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    CiNii Research

  260. Exponential decreasing rate of leaked information in universal random privacy amplification Reviewed International coauthorship

    林 正人

    IEEE Transactions on Information Theory   Vol. 57   page: 3989 - 4001   2011

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    CiNii Research

  261. Additivity and non-additivity of multipartite entanglement measures Reviewed International coauthorship

    Huangjun Zhu, Lin Chen, M. Hayashi

    New Journal of Physics   Vol. 12   page: 083002-   2010.8

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    DOI: 10.1088/1367-2630/12/8/083002

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  262. Capacity With Energy Constraint in Coherent State Channel Reviewed International coauthorship

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 57 ( 8 ) page: 4071-4079   2010.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2010.2050805

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  263. Unitary-process discrimination with error margin Reviewed International coauthorship

    T. Hashimoto, A. Hayashi, M. Hayashi, M. Horibe

    Phys. Rev. A   Vol. 81 ( 6 ) page: 062327   2010.6

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    DOI: 10.1103/PhysRevA.81.062327

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  264. Limiting behavior of relative Renyi entropy in a non-regular location shift family Reviewed International coauthorship

    Masahito Hayashi

    Annals of Institute of Statistical Mathematics   Vol. 62 ( 3 ) page: 547-569   2010.6

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    DOI: 10.1007/s10463-008-0182-4

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  265. Universal Approximation of Multi-copy States and Universal Quantum Lossless Data Compression Reviewed International coauthorship

    Hayashi Masahito

    COMMUNICATIONS IN MATHEMATICAL PHYSICS   Vol. 293 ( 1 ) page: 171-183   2010.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00220-009-0909-y

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  266. Two Non-Regular Extensions of Large Deviation Bound Reviewed International coauthorship

    Hayashi Masahito

    COMMUNICATIONS IN STATISTICS-THEORY AND METHODS   Vol. 39 ( 8-9 ) page: 1404-1423   2010

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/03610920802460761

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  267. Construction of wiretap codes from ordinary channel codes Reviewed International coauthorship

    M. Hayashi and R. Matsumoto

    Proceedings of the International Symposium on Information Theory 2010 (ISIT2010)     page: 2538-2542   2010

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    DOI: 10.1109/ISIT.2010.5513794

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  268. Universal approximation of multi-copy states and universal quantum lossless data compression Reviewed International coauthorship

    林 正人

    Communications in Mathematical Physics 293, No.1     page: 171 - 183   2010

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  269. Two non-regular extensions of large deviation bound Reviewed International coauthorship

    林 正人

    Communications in Statistics 39(829)     page: 1404 - 1423   2010

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  270. The geometric measure of entanglement for a symmetric pure state with non-negative amplitudes Reviewed

    Masahito Hayashi, Damian Markham, Mio Murao, Masaki Owari, Shashank Virmani

    Journal of Mathematical Physics   Vol. 50 ( 12 ) page: 122104   2009.12

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    DOI: 10.1063/1.3271041

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  271. Information Spectrum Approach to Second-Order Coding Rate in Channel Coding Reviewed

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 55 ( 11 ) page: 4947-4966   2009.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TIT.2009.2030478

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  272. Quantum hypothesis testing with group symmetry Reviewed

    F.Hiai, M.Mosonyi, M.Hayashi

    JOURNAL OF MATHEMATICAL PHYSICS   Vol. 50 ( 10 ) page: 103304   2009.10

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    DOI: 10.1063/1.3234186

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  273. Universal Coding for Classical-Quantum Channel Reviewed

    Hayashi Masahito

    COMMUNICATIONS IN MATHEMATICAL PHYSICS   Vol. 289 ( 3 ) page: 1087-1098   2009.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00220-009-0825-1

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  274. Discrimination of Two Channels by Adaptive Methods and Its Application to Quantum System Reviewed

    Hayashi Masahito

    IEEE TRANSACTIONS ON INFORMATION THEORY   Vol. 55 ( 8 ) page: 3807-3820   2009.8

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    DOI: 10.1109/TIT.2009.2023726

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  275. ユニバーサルランダム秘匿性増強における指数的評価 Reviewed

    林 正人

    電子情報通信学会技術研究報告. IT, 情報理論   Vol. 109 ( 143 ) page: 115 - 120   2009.7

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    We derive a new upper bound for Eve's information in secret key generation from a common random number without communication. This bound improves on Bennett's bound based on the Renyi entropy of order 2 because the bound obtained here uses the Renyi entropy of order 1+s for s∈[0,1]. This bound is applied to a wire-tap channel. Then, we derive an exponential upper bound for Eve's information. Our exponent is compared with Hayashi's exponent. For the additive case, the bound obtained here is better. The result is applied to secret key agreement by public discussion.

  276. Group theoretical study of LOCC-detection of maximally entangled states using hypothesis testing Reviewed

    Hayashi Masahito

    NEW JOURNAL OF PHYSICS   Vol. 11   2009.4

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    DOI: 10.1088/1367-2630/11/4/043028

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  277. Fourier Analytic Approach to Phase Estimation in Quantum Systems Reviewed

    H.Imai,M.Hayashi

    New Journal of Physics   Vol. 11 ( 4 ) page: 043034-   2009.4

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    DOI: 10.1088/1367-2630/11/4/043034

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  278. Optimal ratio between phase basis and bit basis in quantum key distributions Reviewed

    Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 79 ( 2 )   2009.2

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    DOI: 10.1103/PhysRevA.79.020303

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  279. Upper bounds of eavesdropper's performances in finite-length code with the decoy method (vol 76, art no 012329, 2007) Reviewed

    Hayashi Masahito

    PHYSICAL REVIEW A   Vol. 79 ( 1 )   2009.1

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    DOI: 10.1103/PhysRevA.79.019901

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  280. Quantum Information Theory and Its Difficulty

    HAYASHI Masahito

    IEICE ESS Fundamentals Review   Vol. 3 ( 1 ) page: 44 - 56   2009

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    DOI: 10.1587/essfr.3.1_44

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  281. 29pTB-1 Quantum Theory from Information Viewpoint Reviewed

    Hayashi Masahito

    Meeting Abstracts of the Physical Society of Japan   Vol. 64.1.2 ( 0 ) page: 306   2009

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    DOI: 10.11316/jpsgaiyo.64.1.2.0_306_3

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  282. Universal coding for classical-quantum channel Reviewed

    林 正人

    Communications in Mathematical Physics 283 No.3     page: 1087 - 1098   2009

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  283. Capacity with energy constraint in coherent state channel Reviewed

    林 正人

    IEEE Transactions on Information Theory     2009

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  284. Discrimination of two channels by adaptive methods and its application to quantum system Reviewed

    林 正人

    IEEE Transactions on Information Theory 55, Issue 8     page: 3807 - 3820   2009

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  285. 量子情報理論とその難しさ Reviewed

    林 正人

    電子情報通信学会 基礎・境界ソサイエティ誌 3, No.1     page: 44 - 56   2009

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  286. 東北大学サイエンスカフェ実施報告-偏光板による量子暗号の模擬実験- Reviewed

    林 正人

    数学通信 14巻2号     page: 38 - 46   2009

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  287. Optimal ratio between phase basis and bit basis in quantum key distribution Reviewed

    林 正人

    Physical Review A 79     page: 20303   2009

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  288. Large deviation theory for non-regular location shift family Reviewed

    林 正人

    Annals of the Institute of Statistical Mathematics     2009

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  289. Information Spectrum Approach to Second-Order Coding Rate in Channel Coding Reviewed

    林 正人

    IEEE Transactions on Information Theory 55, Issue 11     page: 4947 - 4966   2009

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  290. Group theoretical study of LOCC-detection of maximally entangled state using hypothesis testing Reviewed

    林 正人

    New Journal of Physics 11 No.4     page: 43028   2009

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  291. Asymptotic performance of optimal state estimation in qubit system Reviewed

    Hayashi Masahito, Matsumoto Keiji

    JOURNAL OF MATHEMATICAL PHYSICS   Vol. 49 ( 10 )   2008.10

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    DOI: 10.1063/1.2988130

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  292. Second-Order Asymptotics in Fixed-Length Source Coding and Intrinsic Randomness Reviewed

    M. Hayashi

    IEEE Transactions on Information Theory   Vol. 54 ( 10 ) page: 4619-4637   2008.10

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    DOI: 10.1109/TIT.2008.928985

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  293. AK-1-3 Quantum information spectrum and its application Reviewed

    Hayashi Masahito

    Proceedings of the Society Conference of IEICE   Vol. 2008   page: "SS - 4"-"SS-6"   2008.9

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  294. Information extraction versus irreversibility in quantum measurement processes Reviewed

    Buscemi Francesco, Hayashi Masahito, Horodecki Michal

    INTERNATIONAL JOURNAL OF QUANTUM INFORMATION   Vol. 6   page: 613-619   2008.7

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  295. Global information balance in quantum measurements. Reviewed

    Buscemi F, Hayashi M, Horodecki M

    Physical review letters   Vol. 100 ( 21 ) page: 210504   2008.5

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    DOI: 10.1103/PhysRevLett.100.210504

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  296. Statistical analysis of testing of an entangled state based on the Poisson distribution framework Reviewed

    M. Hayashi, A. Tomita, and K. Matsumoto

    New Journal of Physics   Vol. 10   page: 043029-   2008.4

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    DOI: 10.1088/1367-2630/10/4/043029

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  297. Quantum measurements for hidden subgroup problems with optimal sample complexity Reviewed

    Hayashi M.

    Quantum Information and Computation   Vol. 8 ( 3-4 ) page: 345-358   2008.3

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  298. Two-way classical communication remarkably improves local distinguishability Reviewed

    M. Owari and M. Hayashi

    New Journal of Physics   Vol. 10   page: 013006-   2008.1

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    DOI: 10.1088/1367-2630/10/1/013006

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  299. Entanglement of multiparty stabilizer, symmetric, and antisymmetric states Reviewed

    M. Hayashi, D. Markham, M. Murao, M. Owari, S. Virmani

    Physical Review A   Vol. 77 ( 1,Pt.A ) page: 012104   2008

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    DOI: 10.1103/PhysRevA.77.012104

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  300. Statistical analysis of testing of an entangled state based on the Poisson distribution framework Reviewed

    林 正人

    New Journal of physics 10(オンラインジャーナル)     2008

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  301. Asymptotic performance of optimal state estimation in qubit system Reviewed

    林 正人

    Journal of Mathematical Physics 49     page: 102101   2008

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  302. Second-order asymptotics in channel capacity Reviewed

    林 正人

    信学技法 IT2008-5     page: 23 - 28   2008

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  303. Second-Order Asymptotics in Fixed-Length Source Coding and Intrinsic Randomness Reviewed

    林 正人

    IEEE Transaction on Information Theory 54     page: 4619 - 4637   2008

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  304. Quantum measurements for hidden subgroup problems with optimal sample complexity Reviewed

    林 正人

    Quantum Information and Computation 8     page: 345 - 358   2008

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  305. Error exponent in asymmetric quantum hypothesis testing and its application to classical-quantum channel coding Reviewed

    M Hayashi

    Phys. Rev. A   Vol. 76 ( 6 ) page: 062301   2007.12

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    DOI: 10.1103/PhysRevA.76.062301

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  306. General theory for decoy-state quantum key distribution with an arbitrary number of intensities Reviewed

    M Hayashi

    New J. Phys   Vol. 9   page: 284-   2007.8

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    DOI: 10.1088/1367-2630/9/8/284

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  307. Universal distortion-free entanglement concentration Reviewed

    K. Matsumoto, and M. Hayashi

    Physical Review A   Vol. 75 ( 6 ) page: 062338   2007.6

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    DOI: 10.1103/PhysRevA.75.062338

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  308. An Information-Spectrum Approach to Classical and Quantum Hypothesis Testing for Simple Hypotheses Reviewed

    H. Nagaoka, and M. Hayashi

    IEEE Transactions on Information Theory   Vol. 53 ( 2 ) page: 534-549   2007.2

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    DOI: 10.1109/TIT.2006.889463

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  309. Upper bounds of eavesdropper's performances in finite-length code with the decoy method Reviewed

    M Hayashi

    Physical Review A   Vol. 76 ( 1,Pt.A ) page: 012329   2007

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    DOI: 10.1103/PhysRevA.76.012329

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  310. 19pXG-2 Monogamy Inequality for Distributed Gaussian Entanglement Reviewed

    Hayashi M., Tomita A., Hiroshima T., Hasegawa J.

    Meeting Abstracts of the Physical Society of Japan   Vol. 62.1.2 ( 0 ) page: 144   2007

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    DOI: 10.11316/jpsgaiyo.62.1.2.0_144_2

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  311. A general entropic approach to the information-disturbance tradeoff problem in quantum measurements Reviewed

    F. Buscemi, M. Hayashi, and M. Horodecki

    Asian Conference on Quantum Information Science Shiran Kaikan     page: 40-41   2007

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  312. General theory for decoy-state QKD with arbitrary number of intensities Reviewed

    M. Hayashi

    Asian Conference on Quantum Information Science Shiran Kaikan     page: 75-76   2007

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  313. Quantum network coding Reviewed

    Hayashi Masahito, Wama Kazuo, Nishimura Harumichi, Raymond Rudy, Yamashita Shigeru

    STACS 2007, PROCEEDINGS   Vol. 4393   page: 610-+   2007

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  314. Quantum information with Gaussian states Reviewed

    X.-B. Wang, T. Hiroshima, A. Tomita, and M. Hayashi

    Physics Reports   Vol. 448 ( 1-4 ) page: 1-111   2007

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    DOI: 10.1016/j.physrep.2007.04.005

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  315. Prior entanglement between senders enables perfect quantum network coding with modification Reviewed

    M Hayashi

    Phys. Rev. A   Vol. 76 ( 4,Pt.A ) page: 040301   2007

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    DOI: 10.1103/PhysRevA.76.040301

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  316. Prior entanglement between senders enables perfect quantum network coding Reviewed

    M. Hayashi

    Asian Conference on Quantum Information Science Shiran Kaikan     page: 38-39   2007

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  317. Security analysis and experiment of decoy state quantum key distribution incorporating finite statistics Reviewed

    J. Hasegawa, M. Hayashi, Tohya Hiroshima , and Akihisa Tomita

    Asian Conference on Quantum Information Science Shiran Kaikan     page: 77-78   2007

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  318. 21pWA-2 Classical and Quantum Coding Theory Reviewed

    Hayashi Masahito

    Meeting Abstracts of the Physical Society of Japan   Vol. 62.1.2 ( 0 ) page: 316   2007

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    DOI: 10.11316/jpsgaiyo.62.1.2.0_316_2

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  319. Error exponent in asymmetric quantum hypothesis testing and its application to classical-quantum channel coding Reviewed

    林 正人

    Physical Review A 76     page: 62301   2007

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  320. Parallel Treatment of Estimation of SU(2) and Phase Estimation Reviewed

    M. Hayashi

    Physics Letters A   Vol. 354 ( 3 ) page: 183-189   2006.5

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    DOI: 10.1016/j.physleta.2006.01.043

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  321. (4, 1)-量子ランダムアクセス符号の非存在について

    林 正人, 岩間 一雄, 西村 治道, レイモンド ルディ, 山下 茂

    電子情報通信学会技術研究報告. COMP, コンピュテーション   Vol. 106 ( 63 ) page: 33-38   2006.5

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    1999年にAmbainis, Nayak, Ta-shma, Vaziraniによって導入された(n,1,p)-量子ランダムアクセス符号とは,次のような通信システムである.nビットの情報を持つ送信者はその情報を1キュビットに符号化してそれを受信者に送る.受信者は正作用素値測度によって定義される量子的復号プロセスによりp以上の確率で正しく元のnビットの任意の1ビットを復号することができる.Ambainisらは(2,1,0.85)-量子ランダムアクセス符号の存在を示し,同時に古典的にはそのような符号は不可能であることを示した.ChaungはAmbainisらの符号を(3,1,0.79)-量子ランダムアクセス符号に拡張したが,それ以来p>1/2をみたす(4,1,p)-量子ランダムアクセス符号の存在は未解決であった.この論文ではこの未解決問題に対する否定的回答を与える.

  322. Efficient Transmission of Information on the Quantum Network(New Trends in Theory of Computation and Algorithm) Reviewed

    HAYASHI MASAHITO, IWAMA KAZUO, NISHIMURA HARUMICHI, RAYMOND RUDY, YAMASHITA SHIGERU

      Vol. 1489 ( 1489 ) page: 128 - 134   2006.5

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  323. General formulas for fixed-length quantum entanglement concentration Reviewed

    M Hayashi

    Transactions on Information Theory   Vol. 52 ( 5 ) page: 1904 - 1921   2006.5

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    DOI: 10.1109/TIT.2006.872976

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  324. (4,1)-Quantum Random Access Coding Does Not Exist Reviewed

    M. Hayashi, K. Iwama, H. Nishimura, R. Raymond, and S. Yamashita

    ISIT 2006, the 2006 IEEE International Symposium on Information Theory     page: 446-450   2006

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    DOI: 10.1109/ISIT.2006.261708

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  325. (4,1)-Quantum random access coding does not exist-one qubit is not enough to recover one of four bits Reviewed

    M. Hayashi, K. Iwama, H. Nishimura, R. Raymond, and S. Yamashita

    New J. Phys.   Vol. 8 ( 129 ) page: 1-11   2006

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    DOI: 10.1088/1367-2630/8/8/129

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  326. Characterization of several kinds of quantum analogues of relative entropy Reviewed

    M Hayashi

    Quantum Information and Computation   Vol. 6 ( 7 ) page: 583-596   2006

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  327. Bounds on Multipartite Entangled Orthogonal State Discrimination Using Local Operations and Classical Communication Reviewed

    M. Hayashi, D. Markham, M. Murao, M. Owari, and S. Virmani

    Phys. Rev. Lett   Vol. 96   page: 040501-   2006

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    DOI: 10.1103/PhysRevLett.96.040501

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  328. A study of LOCC-detection of a maximally entangled state using hypothesis testing Reviewed

    M. Hayashi, K. Matsumoto, and Y. Tsuda

    Journal of Physics A: Mathematical and General   Vol. 39   page: 14427-14446   2006

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    DOI: 10.1088/0305-4470/39/46/013

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  329. General non-asymptotic and asymptotic formulas in channel resolvability and identification capacity and its application to wire-tap channel Reviewed

    M Hayashi

    IEEE Transactions on Information Theory   Vol. 52 ( 4 ) page: 1562-1575   2006

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    DOI: 10.1109/TIT.2006.871040

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  330. Practical Evaluation of Security for Quantum Key Distribution Reviewed

    M Hayashi

    Physical Review A   Vol. 74 ( 2,Pt.A ) page: 022307   2006

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    DOI: 10.1103/PhysRevA.74.022307

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  331. Practical Evaluation of Security for Quantum Key Distribution Reviewed

    M. Hayashi

    Asian conference on Quantum Information Science 2006 (AQIS 06)     page: 9-10   2006

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  332. Optimal Visible Compression Rate For Mixed States Is Determined By Entanglement Purification Reviewed

    M Hayashi

    Physical Review A   Vol. 73 ( 6,Pt.A ) page: 060301   2006

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    DOI: 10.1103/PhysRevA.73.060301

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  333. Local copying and local discrimination as a study for non-locality of a set Reviewed

    M. Owari, and M. Hayashi

    Physical Review A   Vol. 74 ( 3,Pt.A ) page: 032108   2006

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    DOI: 10.1103/PhysRevA.74.032108

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  334. Hypothesis testing for an entangled state produced by spontaneous parametric down conversion Reviewed

    M. Hayashi, B.-S. Shi, A. Tomita, K. Matsumoto, Y. Tsuda, and Y.-K. Jiang

    Physical Review A   Vol. 74 ( 6,Pt.A ) page: 062321   2006

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    DOI: 10.1103/PhysRevA.74.062321

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  335. Quantum Effect on Eigen-value Estimation in Quantum Two-level System Reviewed

    HAYASHI MASAHITO

    IPSJ journal   Vol. 46 ( 10 ) page: 2447 - 2464   2005.10

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    Concerning the estimation problem of the eigen-value of the density in the quantum two-level system, I compare the accuracy of a estimator based on a quantum measurement with quantum correlation in measuring apparatus with that of the optimal estimator based on a measurement without quantum correlation. It is proven that the estimator realized by Hendrych, et al. (2003) is better than the optimal case without quantum correlation when the true state is closed to a pure state. Although Hendrych, et al. did not discuss the accuracy of their estimation sufficiently, it is expected to be able to be realized to perform an estimation whose accuracy is better than the optimal case without quantum correlation.

  336. On the Second Order Asymptotics for Pure States Family Reviewed

    HAYASHI Masahito

    The Transactions of the Institute of Electronics, Information and Communication Engineers. A   Vol. 88 ( 8 ) page: 903 - 916   2005.8

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  337. Hypotheses testing for maximally entangled state (Statistical Inference of Records and Related Statistics) Reviewed

    林 正人

    数理解析研究所講究録   ( 1439 ) page: 225 - 240   2005.7

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  338. Local Discrimination and multipartite entanglement measures Reviewed

    D. Markham, S. Virmani, M. Owari, M. Murao, M. Hayashi

    ERATO conference on Quantum Information Science 2005 (EQIS 05)     page: 91-92   2005

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  339. Qubit channels which require four inputs to achieve capacity: Implications for additivity conjectures Reviewed

    M. Hayashi, H. Imai, K. Matsumoto, M. B. Ruskai and T. Shimono

    Quantum information and computation   Vol. 5 ( 1 ) page: 13-31   2005

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  340. The relationship between local copying and local discrimination Reviewed

    M. Owari and M. Hayashi

    ERATO conference on Quantum Information Science 2005 (EQIS 05)     page: 31-32   2005

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  341. Intrinsic randomness based on KL-divergence criterion

    HAYASHI Masahito

      Vol. 27 ( 1 ) page: 69-72   2004.12

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  342. Second order asymptotics in fixed-length source coding and intrinsic randomness

    HAYASHI Masahito

      Vol. 27 ( 1 ) page: 65-68   2004.12

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  343. Estimation of SU(2) action by using entanglement Reviewed

    M. Hayashi

    ERATO conference on Quantum Information Science 2004 (EQIS'04)     page: 68-69   2004

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  344. Estimation of SU(2) action by using entanglement Reviewed

    M. Hayashi

    ERATO conference on Quantum Information Science 2004 (EQIS'04)     page: 68-69   2004

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  345. Exponents of channel resolvability and wire-tapped channel Reviewed

    M. Hayashi

    International Symposium on Information Theory and its Applications (ISITA 2004)     page: 1080-1085   2004

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  346. Qubit channels which require four inputs to achieve capacity: Implications for additivity conjectures Reviewed

    M. Hayashi, H. Imai, K. Matsumoto, M. B. Ruskai and T. Shimono

    ERATO conference on Quantum Information Science 2004 (EQIS'04)     page: 45-46   2004

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  347. On error exponents in quantum hypothesis testing Reviewed

    T. Ogawa and M. Hayashi

    IEEE Transactions on Information Theory   Vol. 50 ( 6 ) page: 1368-1372   2004

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    DOI: 10.1109/TIT.2004.828155

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  348. Hypothesis testing for entanglement Reviewed

    Y. Tsuda, M. Hayashi and K. Matsumoto

    ERATO conference on Quantum Information Science 2004 (EQIS'04)     page: 70-71   2004

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  349. General non-asymptotic and asymptotic formulas in channel resolvability and identification capacity Reviewed

    M. Hayashi

    International Symposium on Information Theory and its Applications (ISITA 2004)     page: 1562-1567   2004

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  350. Finding a maximally correlated state -- Simultaneous Schmidt decomposition of bipartite pure states Reviewed

    T. Hiroshima and M. Hayashi

    Physical Review A   Vol. 70 ( 3 ) page: 030302   2004

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    DOI: 10.1103/PhysRevA.70.030302

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  351. Finding a maximally correlated state -- Simultaneous Schmidt decomposition of bipartite pure states Reviewed

    T. Hiroshima and M. Hayashi

    ERATO conference on Quantum Information Science 2004 (EQIS'04)     page: 43-44   2004

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  352. Universal distortion-free entanglement concentration Reviewed

    K. Matsumoto and M. Hayashi

    Proceedings of the International Symposium on Information Theory 2004 (ISIT2004)     page: 323-   2004

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  353. 15aTF-1 Finding a Maximally Correlated State Reviewed

    Hiroshima T, Hayashi M

    Meeting Abstracts of the Physical Society of Japan   Vol. 59.2.2 ( 0 ) page: 130   2004

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    DOI: 10.11316/jpsgaiyo.59.2.2.0_130_2

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  354. 量子系の統計的推測と量子相関 : 推定における量子効果の検証に向けて Reviewed

    林 正人

    物性研究   Vol. 80 ( 5 ) page: 662 - 699   2003.8

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    量子力学では量子状態の量子相関が非局所性を表すものとして扱われているが,量子系の統計的推測においては量子状態の量子相関だけでなく,量子測定における量子相関も重要な役割を果たすことを解説する.さらに,現在の技術で十分に可能な測定で量子相関を用いることによる効果が明確なものを量子ガウス状態や量子2準位系を例にとって提案する.

    CiNii Research

  355. General formulas for capacity of classical-quantum channels Reviewed

    M. Hayashi and H. Nagaoka

    IEEE Transactions on Information Theory   Vol. 49 ( 7 ) page: 1753-1768   2003.7

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    DOI: 10.1109/TIT.2003.813556

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  356. Error exponents for entanglement concentration Reviewed

    M. Hayashi, M. Koashi, K. Matsumoto, F. Morikoshi, and A. Winter

    Journal of Physics A: Mathematical and General   Vol. 36 ( 2 ) page: 527-553   2003

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    DOI: 10.1088/0305-4470/36/2/316

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  357. General asymptotic formulas for fixed-length quantum entanglement concentration Reviewed

    M. Hayashi

    Proceedings of the International Symposium on Information Theory 2003 (ISIT2003)     page: 431-   2003

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  358. On error exponents in quantum hypothesis testing Reviewed

    T. Ogawa and M. Hayashi

    Proceedings of the International Symposium on Information Theory 2003 (ISIT2003)     page: 479-   2003

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  359. Optimal sequence of quantum measurements in the sense of Stein's lemma in quantum hypothesis testing Reviewed

    Hayashi M

    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL   Vol. 35 ( 50 ) page: 10759-10773   2002.12

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  360. Simple construction of quantum universal variable-length source coding Reviewed

    Hayashi M, Matsumoto K

    QUANTUM INFORMATION & COMPUTATION   Vol. 2   page: 519-529   2002.12

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  361. Two quantum analogues of Fisher information from a large deviation viewpoint of quantum estimation Reviewed

    Hayashi M

    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL   Vol. 35 ( 36 ) page: 7689-7727   2002.9

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  362. Exponents of quantum fixed-length pure state source coding Reviewed

    M Hayashi

    Physical Review A   Vol. 66 ( 3 ) page: 032321   2002.9

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    DOI: 10.1103/PhysRevA.66.032321

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  363. Quantum Statistical Inference : Theory and Application Invited Reviewed

    HAYASHI Masahito

    The Journal of the Institute of Electronics,Information and Communication Engineers   Vol. 85 ( 8 ) page: 600-605   2002.8

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  364. A general formula for the classical capacity of a general quantum channel Reviewed

    M. Hayashi and H. Nagaoka

    Proceedings of the International Symposium on Information Theory 2002 (ISIT2002)     page: 71-   2002

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  365. Error exponents for entanglement concentration Reviewed

    F. Morikoshi, M. Hayashi, M. Koashi, K. Matsumoto, and A. Winter

    ERATO Workshop on Quantum Information Science 2002 (EQIS2002)     page: 46-47   2002

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  366. Coherent states and anihilation-creation operators associated with the irreducible unitary representations of su(1,1) Reviewed

    F. Sakaguchi and M. Hayashi

    Journal of Mathematical Physics   Vol. 43 ( 5 ) page: 2241-2248   2002

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    DOI: 10.1063/1.1470707

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  367. Quantum universal variable-length source coding Reviewed

    M. Hayashi and K. Matsumoto

    ERATO Workshop on Quantum Information Science 2002 (EQIS2002)     page: 31-32   2002

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  368. Quantum universal variable-length source coding Reviewed

    M. Hayashi and K. Matsumoto

    Physical Review A   Vol. 66 ( 2 ) page: 022311   2002

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    DOI: 10.1103/PhysRevA.66.022311

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  369. Simple construction of quantum universal variable-length coding Reviewed

    M. Hayashi and K. Matsumoto

    Quantum Information and Computation   Vol. 2   page: 519-529   2002

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  370. Error exponents for entanglement concentration Reviewed

    Morikoshi Fumiaki, Hayashi Masahito, Koashi Masato, Matsumoto Keiji, Andres Winter

    Meeting Abstracts of the Physical Society of Japan   Vol. 57.2.2 ( 0 ) page: 143   2002

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    DOI: 10.11316/jpsgaiyo.57.2.2.0_143_3

    CiNii Research

  371. Exponent of correct probability of hypothesis testing and fixed-length source coding with the general source

    HAYASHI Masahito, NAGAOKA Hiroshi

      Vol. 24 ( 2 ) page: 493-496   2001.12

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  372. Quantum hypothesis testing for the general quantum hypotheses

    HAYASHI Masahito

      Vol. 24 ( 2 ) page: 591-594   2001.12

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  373. Asymptotics of quantum relative entropy from a representation theoretical viewpoint Reviewed

    Hayashi M

    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL   Vol. 34 ( 16 ) page: 3413-3419   2001.4

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  374. Cauchy wavelets in Terms of su(1,1)-Coherent States(The 8th Symposium on Non-Equilibrium Statisitical Physics) Reviewed

    Sakaguchi Fuminori, Hayashi Masahito

      Vol. 75 ( 5 ) page: 964 - 972   2001.2

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  375. Optimal sequence of POVMs in the sense of Stein's lemma in quantum hypothesis testing Reviewed

    M. Hayashi

    ERATO workshop on Quantum Information Science 2001 (EQIS2001)     page: 20-   2001

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  376. Recent Developments in Quantum Statistical Inference Reviewed

    Masahito Hayashi, Keiji Matsumoto

    Bulletin of the Japan Society for Industrial and Applied Mathematics,Iwanami-Shoten   Vol. 11 ( 3 ) page: 27-48   2001

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  377. Subnormal operators regarded as generalized observables and compound-system-type normal extension related to su(1,1) Reviewed

    Hayashi M, Sakaguchi F

    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL   Vol. 33 ( 43 ) page: 7793-7820   2000.11

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  378. Two Kinds of Bahadur Type Bound in Adaptive Experimental Design Reviewed

    HAYASHI Masahito, MATSUMOTO Keiji

    The Transactions of the Institute of Electronics,Information and Communication Engineers. A   Vol. 83 ( 6 ) page: 629 - 638   2000.6

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    Publishing type:Research paper (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers  

  379. Subnormal operators regarded as generalized observables and compound-system-type normal extension related to su(1,1) (New Development of Infinite-Dimensional Analysis and Quantum Probability) Reviewed

    林 正人, 坂口 文則

    数理解析研究所講究録   ( 1139 ) page: 74 - 98   2000.4

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  380. Subnormal operators regarded as generalized observables and compound-system-type normal extension related to $\mathfrak{su}(1,1)$ (New Development of Infinite-Dimensional Analysis and Quantum Probability) Reviewed

    Hayashi Masahito, Sakaguchi Fuminori

      Vol. 1139   page: 74 - 98   2000.4

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  381. A relationship between continuous wavelet transformation and the algebra su(1,1) Reviewed

    F. Sakaguchi and M. Hayashi

    Proceedings of the IASTED International Conference on Signal Processing and Communications (SPC 2002)     page: 390-394   2000

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  382. Asymptotic estimation theory for a finite dimensional pure state model Reviewed

    M. Hayashi

    Journal of Physics A: Mathematical and General   Vol. 31 ( 20 ) page: 4633-4655   1998

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    DOI: 10.1088/0305-4470/31/20/006

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  383. Asymptotic Attainment for Quantum Relative Entropy Reviewed

    Hayashi Masahito

      Vol. 1013 ( 1013 ) page: 60 - 64   1997.9

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  384. A linear programming approach to attainable Cramer-Rao type bounds Reviewed

    Hayashi M

    QUANTUM COMMUNICATION, COMPUTING, AND MEASUREMENT     page: 99-108   1997

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Books 9

  1. A group theoretic approach to quantum information

    ( Role: Sole author)

    Springer  2017  ( ISBN:9783319452395

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    CiNii Books

  2. Group representation for quantum theory

    ( Role: Sole author)

    Springer  2017  ( ISBN:9783319449043

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  3. Quantum information theory : mathematical foundation

    林 正人(量子情報理論)( Role: Sole author)

    Springer  2017  ( ISBN:9783662570326

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    CiNii Books

  4. Introduction to quantum information science

    ( Role: Joint author)

    Springer  2015  ( ISBN:9783662435014

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  5. 量子論のための表現論

    林 正人(量子情報理論)( Role: Sole author)

    共立出版  2014  ( ISBN:9784320110786

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    Language:Japanese Book type:Scholarly book

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  6. 量子情報への表現論的アプローチ

    林 正人(量子情報理論)( Role: Sole author)

    共立出版  2014  ( ISBN:9784320110793

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    Language:Japanese Book type:Scholarly book

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  7. 量子情報科学入門 = Introduction to quantum information science

    石坂 智, 小川 朋宏, 河内 亮周, 木村 元(量子力学), 林 正人(量子情報理論)( Role: Sole author)

    共立出版  2012  ( ISBN:9784320122994

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  8. 数理工学事典

    ( Role: Sole author)

    朝倉書店  2011  ( ISBN:9784254280036

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  9. 量子確率論とエントロピー解析

    京都大学数理解析研究所( Role: Sole author)

    京都大学数理解析研究所  1997 

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Presentations 257

  1. Special functions in quantum statistical estimation Invited International conference

    Masahito Hayashi

    International Symposium on Orthogonal Polynomials, Special Functions and Applications (OPSFA)  2022.6.13  University of Montreal

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    Event date: 2022.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue: Montreal   Country:Canada  

  2. Estimation of quantum state and quantum channel Invited International coauthorship International conference

    Hayashi M.

    Bernoulli-IMS 10th World Congress in Probability and Statistics 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Korea  

  3. Pseudo standard entanglement structure cannot be distinguished from standard entanglement structure International coauthorship International conference

    H. Arai and M. Hayashi

    26th Quantum Information Processing  2023.2.7  Ghent

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    Event date: 2023.2

    Language:English   Presentation type:Poster presentation  

    Venue:Ghent   Country:Belgium  

  4. 量子情報理論におけるt-design とその応用 Invited

    林正人

    IMI 共同利用研究「機械学習 への組合せ論的アプローチ」  2022.9.20  九州大学

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:福岡   Country:Japan  

  5. Algorithm for rate distortion theory based on em algorithm International conference

    Masahito Hayashi

    International Conference on Information Geometry for Data Science  2022.9.22  Hamburg University of Technology,

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    Event date: 2022.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Hamburg   Country:Germany  

  6. Exponents in Smoothing the Max-Relative Entropy and of Randomness Extraction Against Quantum Side Information International coauthorship International conference

    K. Li, Y. Yao, and M. Hayashi

    2022 IEEE Int. Symp. Information Theory (ISIT)  2022.6.29  Aalto University,

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    Event date: 2022.6 - 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Espoo   Country:Finland  

  7. Analytical Calculation Formulas for Capacities of Classical and Classical-Quantum Channels, International conference

    M. Hayashi

    2022 IEEE Int. Symp. Information Theory (ISIT)  2022.6.29  Aalto University,

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    Event date: 2022.6 - 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Espoo   Country:Finland  

  8. Commitment Capacity of Classical-Quantum Channels International coauthorship International conference

    M. Hayashi and N, Warsi,

    2022 IEEE Int. Symp. Information Theory (ISIT)  2022.6.29  Aalto University,

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    Event date: 2022.6 - 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Espoo   Country:Finland  

  9. Optimum ratio between two bases in the Bennett-Brassard 1984 protocol with second-order analysis Invited International conference

    M. Hayashi

    6th Forum for Complexity and Security,  2022.5.20  Beijing University of Posts and Telecommunications

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    Event date: 2022.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:Beijing   Country:China  

  10. Dense Coding with Locality Restriction for Decoder: Quantum Encoders vs. Super-Quantum Encoders International coauthorship International conference

    Hayashi M., Wang K.

    25th Annual Conference on Quantum Information Processing 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

    Venue:USA  

  11. k When are Adaptive Strategies in Asymptotic Quantum Channel Discrimination Useful? International coauthorship International conference

    Salek M., Hayashi M., Winter A.

    25th Annual Conference on Quantum Information Processing 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

    Venue:USA  

  12. Quantum Private Information Retrieval for Quantum Messages International coauthorship International conference

    Song S., Hayashi M.

    25th Annual Conference on Quantum Information Processing 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

    Venue:USA  

  13. Global Heisenberg scaling in noisy and practical phase estimation International coauthorship International conference

    Hayashi M,Liu Z-W, Yuan H.

    25th Annual Conference on Quantum Information Processing 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

    Venue:USA  

  14. Estimation of quantum state and quantum channel Invited International conference

    Masahito Hayashi

    International Conference on Quantum Information and Foundations  2022.2.17  Indian Statistical Institute

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    Event date: 2022.2

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Kolkata,   Country:India  

  15. Secure list decoding and its application to bit-string commitment Invited International coauthorship

    Hayashi M.

    Workshop in Algebraic Geometry code (II) 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:China  

  16. Refined Density Evolution Analysis of LDPC Codes for Successive Interference Cancellation International coauthorship International conference

    Takabe S., Wadayama T., Hayashi M.

    IEEE Global Communications Conference 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Spain  

  17. Non-standard entanglement structure of Local unitary self-dual models as a saturated situation of repeatability in General Probabilistic Theories International coauthorship

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    Event date: 2021.11 - 2021.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  18. Secure list decoding and its application to bit-string commitment International coauthorship International conference

    Hayashi M.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Taiwan  

  19. Secure Modulo Sum via Multiple Access Channel International coauthorship International conference

    Hayashi M.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  20. Universal classical-quantum superposition coding and universal classical-quantum multiple access channel coding International coauthorship International conference

    Hayashi M, Cai N.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  21. Global Heisenberg scaling in noisy and practical phase estimation International coauthorship International conference

    Hayashi M,Liu Z-W, Yuan H.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  22. Asymmetry of tensor product of asymmetric and invariant vectors arising from Schur-Weyl duality based on hypergeometric orthogonal polynomial International coauthorship International conference

    Hayashi M.,Hora A.,Yanagida S.

    Beyond IID in Information Theory 9 

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    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  23. Quantum-inspired secure wireless communication protocol under spatial and local Gaussian noise assumptions International coauthorship International conference

    Hayashi M.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  24. Environment-Assisted Classical Communication via Quantum Resources: Quantum Encoders vs. Super-Quantum Encoders International coauthorship International conference

    Hayashi M., Wang K.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  25. Quantum Private Information Retrieval for Quantum Messages International coauthorship International conference

    Song S., Hayashi M.

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:Taiwan  

  26. Quantum Casual Unravelling International coauthorship International conference

    G. Bai, Y.-D. Wu, Y. Zhu, M. Hayashi, and G. Chiribella

    Beyond IID in Information Theory 9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Taiwan  

  27. Quantum Private Information Retrieval for Quantum Messages International coauthorship International conference

    Song S., Hayashi M.

    Qcrypt  

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    Event date: 2021.8

    Language:English   Presentation type:Poster presentation  

    Venue: Leiden University, Leiden, Netherlands  

  28. Universal classical-quantum multiple access channel coding International coauthorship International conference

    Hayashi M, Cai N.

    IEEE International Symposium on Information Theor 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Australia,  

  29. Secure Modulo Sum via Multiple Access Channel International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory  

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Australia,  

  30. Equivalence of Non-Perfect Secret Sharing and Symmetric Private Information Retrieval with General Access Structure International coauthorship International conference

    Song S., Hayashi M.

    IEEE International Symposium on Information Theor 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Australia,  

  31. Quantum Private Information Retrieval for Quantum Messages International coauthorship International conference

    Song S., Hayashi M.

    IEEE International Symposium on Information Theor 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Australia,  

  32. Asymptotic Separation Between Adaptive and Non-adaptive Strategies in Quantum Channel International coauthorship International conference

    Salek M., Hayashi M., Winter A.

    IEEE International Symposium on Information Theor 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Australia,  

  33. Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness International coauthorship International conference

    Hayashi M, Fang K., Wang K.

    IEEE International Symposium on Information Theor 

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    Event date: 2021.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Australia,  

  34. Estimation of group action with energy constraint and its application to uncertainty relations on S1 and S3 International coauthorship International conference

    Hayashi M.

    SUSTech-Nagoya workshop on Quantum Science 2021 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:China  

  35. Perfect Discrimination in Approximate Quantum Theory of General Probabilistic Theories International coauthorship International conference

    Y. Yoshida, H. Arai, M. Hayashi,

    QIP2021 

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    Event date: 2021.2

    Language:English   Presentation type:Poster presentation  

    Venue:Technical University of Munich, Munich, Germany  

  36. Efficient Algorithms for Quantum Causal Discovery International coauthorship International conference

    Ge Bai, Ya-Dong Wu, Yan Zhu, Masahito Hayashi, Giulio Chiribella,

    QIP2021 

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    Event date: 2021.2

    Language:English   Presentation type:Poster presentation  

    Venue:Technical University of Munich, Munich, Germany  

  37. Capacity of Quantum Private Information Retrieval with Colluding Servers International coauthorship International conference

    S. Song, M. Hayashi

    QIP2021 

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    Event date: 2021.2

    Language:English   Presentation type:Poster presentation  

    Venue:Technical University of Munich, Munich, Germany  

  38. Universal classical-quantum multiple access channel coding and classical-quantum compound multiple access channel coding International coauthorship International conference

    Masahito Hayashi} Ning Cai,

    QIP2021 

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    Event date: 2021.2

    Language:English   Presentation type:Poster presentation  

    Venue:Technical University of Munich, Munich, Germany  

  39. Permutation Enhances Classical Communication Assisted by Entangled States International coauthorship International conference

    K. Wang, M. Hayashi

    QIP2021 

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    Event date: 2021.2

    Language:English   Presentation type:Poster presentation  

    Venue:Technical University of Munich, Munich, Germany  

  40. Finite Block Length Analysis on Incoherent Randomness Extraction and Quantum Coherence Distillation International coauthorship International conference

    Masahito Hayashi, Kun Fang,

    QIP2021 

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    Event date: 2021.2

    Language:English   Presentation type:Poster presentation  

    Venue:Technical University of Munich, Munich, Germany  

  41. Capacity of Quantum Private Information Retrieval with Colluding Servers International coauthorship

    S. Song, M. Hayashi

    量子情報技術研究会 (QIT43) 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  42. Perfect Discrimination in Approximate Quantum Theory of General Probabilistic Theories International coauthorship

    Y. Yoshida, H. Arai, M. Hayashi,

    量子情報技術研究会 (QIT43) 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  43. Efficient Algorithms for Causal Order Discovery in Quantum Networks International coauthorship International conference

    G. Bai, Y.-D. Wu, Y. Zhu, M. Hayashi, G. Chiribella,

    20th Asian Quantum Information Science Conference 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sydney, Australia  

  44. Perfect Discrimination in Approximate Quantum Theory of General Probabilistic Theories International coauthorship International conference

    Y. Yoshida, H. Arai, M. Hayashi,

    20th Asian Quantum Information Science Conference 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sydney, Australia  

  45. Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Extraction International coauthorship International conference

    M. Hayashi, K. Wang, and K. Fang,

    20th Asian Quantum Information Science Conference 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sydney, Australia  

  46. Permutation Enhances Classical Communication Assisted by Entangled States International coauthorship International conference

    K. Wang, M. Hayashi

    20th Asian Quantum Information Science Conference 

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sydney, Australia  

  47. When are Adaptive Strategies in Asymptotic Quantum Channel Discrimination Useful? International coauthorship International conference

    F. Salek, M. Hayashi, and A. Winter

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Stanford University, USA  

  48. Application of the Resource Theory of Channels to Communication Scenarios International coauthorship International conference

    R. Takagi, K. Wang, and M. Hayashi

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Stanford University, USA  

  49. Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Extraction International coauthorship International conference

    M. Hayashi, K. Wang, and K. Fang,

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Stanford University, USA  

  50. Perfect Discrimination in Approximate Quantum Theory of General Probabilistic Theories International coauthorship International conference

    Y. Yoshida, H. Arai, M. Hayashi,

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Venue:Stanford University, USA  

  51. Permutation Enhances Classical Communication Assisted by Entangled States International coauthorship International conference

    K. Wang, M. Hayashi

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Venue:Stanford University, USA  

  52. Representation matching for delegated quantum computing International coauthorship International conference

    Y. Yang and M. Hayashi

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Venue:Stanford University, USA  

  53. Capacity of Quantum Private Information Retrieval with Colluding Servers International coauthorship International conference

    S. Song, M. Hayashi

    Beyond IID in Information Theory 8 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Venue:Stanford University, USA  

  54. Information-Theoretic Anonymous Cryptographic Protocols Invited International coauthorship International conference

    M. Hayashi

    ISITA2020 - The International Symposium on Information Theory and Its Applications 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (keynote)  

    Venue:Kapolei, Hawai’i, USA  

  55. Finite Block Length Analysis on Incoherent Randomness Extraction and Quantum Coherence Distillation Invited International coauthorship International conference

    Masahito Hayashi, Kun Fang,

    Qcrypt 2020 

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    Event date: 2020.8

    Language:English   Presentation type:Poster presentation  

    Venue:Amsterdam, The Netherlands  

  56. Capacity of Quantum Private Information Retrieval with Colluding Servers Invited International coauthorship International conference

    S. Song, M. Hayashi

    Qcrypt 2020 

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    Event date: 2020.8

    Language:English   Presentation type:Poster presentation  

    Venue:Amsterdam, The Netherlands  

  57. Quantum Information Processing over Quantum Network Invited International coauthorship International conference

    M. Hayashi

    SPCOM 2020 - International Conference on Signal Processing and Communications 

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    Event date: 2020.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Indian Institute of Science, Bangalore, India  

  58. Overview about previous finite size results Invited International coauthorship International conference

    M. Hayashi

    QKD Security Proof Workshop 2020 

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    Event date: 2020.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:University of Waterloo & University of Toronto,  

  59. Classical Mechanism is Optimal in Classical-Quantum Differentially Private Mechanisms International coauthorship International conference

    Y. Yoshida, M. Hayashi

    IEEE International Symposium on Information Theory (ISIT2020) 

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    Event date: 2020.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Los Angeles, California, USA  

  60. Permutation Enhances Classical Communication Assisted by Entangled States International coauthorship International conference

    K. Wang, M. Hayashi

    IEEE International Symposium on Information Theory (ISIT2020) 

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    Event date: 2020.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Los Angeles, California, USA  

  61. Capacity of Quantum Private Information Retrieval with Colluding Servers International coauthorship International conference

    S. Song, M. Hayashi

    IEEE International Symposium on Information Theory (ISIT2020) 

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    Event date: 2020.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Los Angeles, California, USA  

  62. Capacity of Quantum Private Information Retrieval with Colluding Servers International coauthorship International conference

    S. Song, M. Hayashi

    IEEE International Symposium on Information Theory (ISIT2020) 

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    Event date: 2020.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Los Angeles, California, USA  

  63. Operational interpretation of Rényi conditional mutual information via composite hypothesis testing against Markov distributions International coauthorship International conference

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2016.7541366

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  64. Remaining uncertainties and exponents under Rényi information measures International coauthorship International conference

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    Event date: 2016.8

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2016.7541556

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  65. Correlation detection and an operational interpretation of the Rényi mutual information International coauthorship International conference

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2015.7282695

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  66. Erasure and undetected error probabilities in the moderate deviations regime International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2015.7282770

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  67. Equivocations and exponents under various Rényi information measures International coauthorship International conference

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2015.7282461

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  68. More efficient privacy amplification with less random seeds International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2015.7282763

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  69. Tight asymptotic bounds on local hypothesis testing between a pure bipartite state and the white noise state International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2015.7282543

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  70. Finite-length analysis for secret random number generation and coding theorems International coauthorship International conference

    Hayashi M.

    Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014 

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    Event date: 2014.12

    Language:English   Presentation type:Oral presentation (general)  

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  71. Finite-length analysis on tail probability and simple hypothesis testing for Markov chain International coauthorship International conference

    Watanabe S.

    Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014 

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    Event date: 2014.12

    Language:English   Presentation type:Oral presentation (general)  

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  72. Universal channel coding with continuous output system International coauthorship International conference

    Hayashi M.

    Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014 

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    Event date: 2014.12

    Language:English   Presentation type:Oral presentation (general)  

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  73. Strong converse for a degraded wiretap channel via active hypothesis testing International coauthorship International conference

    Hayashi M.

    2014 52nd Annual Allerton Conference on Communication, Control, and Computing, Allerton 2014 

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    Event date: 2014.1

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ALLERTON.2014.7028449

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  74. 乱数変換に対する二次漸近解析 (情報理論) International coauthorship

    熊谷 亘, 林 正人

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 

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    Event date: 2014.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    本発表では確率分布Pから生成されるの独立同一乱数を、Qから生成される独立同一乱数へ変換する際の最適生成レートに関して論じる。確率分布QまたはPが一様分布である場合は、この問題はそれぞれintrinsic randomnessおよびresolvabilityと呼ばれており、一次だけでなく二次の漸近解析もなされてきた。一方、PおよびQの双方が非一様分布である場合、その二次漸近論は扱われてこなかった。本発表ではPおよびQが有限集合上の一様とは限らない確率分布とし、それらの間の最適変換レートを行う。We treat a random number generation from an i.i.d. probability distribution of P to that of Q. When Q or P is a uniform distribution, the problems have been well-known as the uniform random number generation and the resolvability problem respectively, and analyzed not only in the context of the first order asymptotic theory but also that in the second asymptotic theory. On the other hand, when both P and Q are not a uniform distribution, the second order asymptotics has not been treated. In this paper, we focus on the second order asymptotics of a random number generation for arbitrary probability distributions P and Q on a finite set. In particular, we derive the optimal second order generation rate under an arbitrary permissible confidence coefficient.

  75. A duality relation connecting different quantum generalizations of the conditional Rényi entropy International coauthorship International conference

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    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2014.6874929

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  76. Asymptotic reversibility of LOCC conversions International coauthorship International conference

    Ito K.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2014

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2014.6874889

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  77. Information geometry approach to parameter estimation in Markov chains International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2014

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2014.6875001

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  78. Secret key agreement: General capacity and second-order asymptotics International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2014

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2014.6875010

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  79. Non-asymptotic and asymptotic analyses on Markov chains in several problems International coauthorship International conference

    Hayashi M.

    2014 Information Theory and Applications Workshop, ITA 2014 - Conference Proceedings 

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    Event date: 2014

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ITA.2014.6804255

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  80. Non-asymptotic analysis of privacy amplification via Rényi entropy and inf-spectral entropy International coauthorship International conference

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2013.6620720

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  81. Quantum security analysis via smoothing of Renyi entropy of order 2 International coauthorship International conference

    Hayashi M.

    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1007/978-3-642-35656-8_11

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  82. Non-asymptotic bounds on fixed length source coding for Markov chains International coauthorship International conference

    Hayashi M.

    2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013 

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    Event date: 2013

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/Allerton.2013.6736617

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  83. Secure multiplex coding with dependent and non-uniform multiple messages International coauthorship International conference

    Hayashi M.

    2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012 

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    Event date: 2012.12

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/Allerton.2012.6483321

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  84. Precise evaluation of leaked information with universal <inf>2</inf> privacy amplification in the presence of quantum attacker International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2012.10

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2012.6284690

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  85. Quantum wiretap channel with non-uniform random number and its exponent of leaked information International coauthorship International conference

    Hayashi M.

    IEEE International Symposium on Information Theory - Proceedings 

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    Event date: 2012.10

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1109/ISIT.2012.6284691

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  86. Dual universality of hash functions and its applications to quantum cryptography International coauthorship International conference

    2011 

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    Language:English   Presentation type:Oral presentation (general)  

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  87. Dual universality of hash functions and its applications to classical and quantum cryptography International coauthorship International conference

    QCRYPT 2011: First Annual Conference on Quantum Cryptography  2011 

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  88. Classification of pure tripartite states by reduced bipartite densities International coauthorship International conference

    2011 

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    Event date: 2011

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  89. Multi-copy and stochastic transformation of multipartite pure states International coauthorship International conference

    2011 

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    Event date: 2011

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  90. Secure Multiplex Coding with a Common Message International coauthorship International conference

    2011 

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  91. 量子ガウス状態族に関する仮説検定 International coauthorship International conference

    林 正人

    量子情報科学 ウィンタースクール 2011  2011 

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    Event date: 2011

    Language:English   Presentation type:Poster presentation  

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  92. 量子ガウス状態族に対する量子仮説検定 International coauthorship International conference

    林 正人

    第4回東北大学大学院理学研究科6専攻合同シンポジウム  2011 

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    Event date: 2011

    Language:English   Presentation type:Poster presentation  

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  93. 量子ガウス状態族に対する量子仮説検定 International coauthorship International conference

    林 正人

    第25回量子情報技術研究会 (QIT25)  2011 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

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  94. 量子ガウス状態族に対する量子仮説検定 International coauthorship International conference

    林 正人

    量子情報処理プロジェクト夏期研修会2011 〜関西・関東学生チャプター合同研究会〜  2011 

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  95. 量子ガウス状態族に対する量子仮説検定 International coauthorship International conference

    林 正人

    日本数学会東北支部会  2011 

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    Language:English   Presentation type:Oral presentation (general)  

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  96. 量子ガウス状態族に対する量子仮説検定 International coauthorship International conference

    林 正人

    第12回Student Chapter  2011 

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    Language:English   Presentation type:Poster presentation  

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  97. 量子ガウス状態族に対する量子仮説検定 International coauthorship International conference

    林 正人

    2011年度 統計関連学会連合大会  2011 

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    Language:English   Presentation type:Oral presentation (general)  

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  98. ユニバーサルハッシュ関数の双対性とその量子暗号への応用 International coauthorship International conference

    林 正人

    第24回量子情報技術研究会 (QIT24)  2011 

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    Language:English   Presentation type:Oral presentation (general)  

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  99. Dual universality of hash functions and its applications to classical and quantum cryptography International coauthorship International conference

    HAYASHI MASAHITO

    QCRYPT 2011: First Annual Conference on Quantum Cryptography  2011 

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    Language:English   Presentation type:Oral presentation (general)  

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  100. Asymptotic theory for quanutm channel estimation International conference

    2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

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  101. Quantum Statistical State Estimation and Quantum Cramer-Rao Bound International conference

    IISA-ISPS 2010 International Conference on Statistics, Probability, Operations Research, Computer Science and Allied Areas  2010 

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    Event date: 2010

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  102. Construction of wiretap codes from ordinary channel codes International conference

    2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

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  103. Quantum channel estimation and asymptotic bound Invited International conference

    Hayashi Masahito

    INTERNATIONAL WORKSHOP ON STATISTICAL-MECHANICAL INFORMATICS 2010 (IW-SMI 2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1088/1742-6596/233/1/012016

  104. Pure state identification with multi-copy states International conference

    First Graduate Student Congress on Quantum Information and Computation, Centre for Quantum Technologies  2010 

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  105. Phase estimation with photon number constraint International conference

    2nd International Conference on Quantum Information and Technology  2010 

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  106. Best rank one approximation in quantum information International conference

    2010 

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  107. Strong security and separated code constructions for the broadcast channels with confidential messages International conference

    2010 

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  108. 滑らかな波束を用いたシュレーディンガー方程式の整数型高確度解法 International conference

    林 正人

    日本数学会2010年度年会  2010 

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  109. 量子情報におけるユニバーサルプロトコル理論の構築と量子暗号への応用 International conference

    林 正人

    特定領域「情報統計力学(DEX-SMI)」の総括と今後の展開  2010 

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    Language:English   Presentation type:Oral presentation (general)  

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  110. 量子ガウス状態族に対する仮説検定 International conference

    林 正人

    第23回量子情報技術研究会 (QIT23)  2010 

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    Language:English   Presentation type:Oral presentation (general)  

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  111. 古典情報を用いないユニバーサルな純粋状態識別プロトコル International conference

    林 正人

    第23回量子情報技術研究会 (QIT23)  2010 

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  112. シュレーディンガー方程式の固有値問題の整数型高確度解法 International conference

    林 正人

    日本数学会2010年度年会  2010 

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  113. 「量子情報理論の取り巻く状況」 International conference

    林 正人

    応用物理学会・量子エレクトロニクス研究会 「量子情報の最前線と今後10年の展開」  2010 

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  114. Construction of wiretap codes from ordinary channel codes International conference

    Hayashi Masahito, Matsumoto Ryutaroh

    2010 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY 

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    Language:English   Presentation type:Oral presentation (general)  

  115. Channel coding with finite average photon number International conference

    2009 

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  116. Quantum universal coding protocols and universal approximation of multi-copy states International conference

    The 6th Joint meeting of Chinese Physicist Worldwide (OCPA6)  2009 

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  117. Quantum Statistical State Estimation and Quantum Cramer-Rao Bound International conference

    INTERNATIONAL CONFERENCE ON Frontiers of Interface between Statistics and Sciences  2009 

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  118. Quantum Key Distribution and Related Topics International conference

    2009 

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  119. Quantum Key Distribution International conference

    Expository Quantum Lecture Series (EQuaLS)  2009 

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  120. Identification of rotation axis in Bloch Sphere International conference

    DEX-SMI Workshop on Quantum Statistical Inference  2009 

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  121. Group theoretical study of LOCC-detection of maximally entangled state using hypothesis testing International conference

    DEX-SMI Workshop on Quantum Statistical Inference  2009 

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  122. Exponential evaluations in universal random privacy amplification International conference

    2009 

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  123. Quantum Universal Coding Protocols and Universal approximation of multi-copy states International conference

    International Conferrence on Quantum Information and Technology  2009 

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  124. 線型常微分方程式の整数型アルゴリズムの実現とその誤差上限 International conference

    林 正人

    日本数学会2009年度年会  2009 

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  125. 局在型波束を用いた高階線型常微分方程式の整数型解法 International conference

    林 正人

    日本数学会2009年度年会  2009 

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  126. 量子系でのベイズ符号と冗長度 International conference

    林 正人

    DEX-SMI 2009 研究成果発表会  2009 

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  127. 量子暗号・量子情報処理~新しい通信と情報処理~ International conference

    林 正人

    量子情報と確率的情報処理 Quantum Information and Probabilistic Information Processing 2009 (QIPIP2009)  2009 

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  128. Quantum universal coding protocols and universal approximation of multi-copy states Invited International conference

    Hayashi Masahito

    INTERNATIONAL WORKSHOP ON STATISTICAL-MECHANICAL INFORMATICS 2008 (IW-SMI 2008) 

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    Event date: 2009

    Language:English   Presentation type:Oral presentation (general)  

    DOI: 10.1088/1742-6596/143/1/012017

  129. Fourier analytic approach to phase estimation International conference

    Recent Advances in Statistical Inference - in Honor of Professor Masafumi Akahira  2008 

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  130. Fourier analytic approach to phase estimation International conference

    2008 

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  131. Fourier Analytic Method in Phase Estimation Problem International conference

    Sendai-Workshop 2008  2008 

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  132. Discrimination of two channels by adaptive methods and its application to quantum system International conference

    Sendai-Workshop 2008  2008 

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  133. Discrimination of two channels by adaptive methods International conference

    2008 

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    Event date: 2008

    Language:English   Presentation type:Oral presentation (general)  

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  134. Chernoff and Hoeffding bounds in one-way LOCC International conference

    GSIS & DEX-SMI Workshop on Quantum statistical inference and entanglement  2008 

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    Event date: 2008

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  135. Quantum capacity and degraded channel International conference

    Multicritical Behaviour of Spin Glasses and Quantum Error Correcting Codes (MBQEC)  2008 

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    Event date: 2008

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  136. Optimal ratio between phase basis and bit basis in QKD International conference

    2008 

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    Event date: 2008

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  137. Information Spectrum Approach to Second-Order Coding Rate in Channel Coding International conference

    2008 

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    Event date: 2008

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  138. Quantum universal coding protocols and universal approximation of multi-copy states International conference

    2008 

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    Event date: 2008

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  139. 量子情報スペクトルの考え方とその応用 International conference

    林 正人

    電子情報通信学会 ソサエティ大会, ソサイエティ特別企画セッション, AK-1. 情報スペクトル理論とその周辺,  2008 

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    Event date: 2008

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  140. 通信路容量についての2次の漸近論 International conference

    林 正人

    情報理論研究会(IT)  2008 

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    Event date: 2008

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  141. 古典・量子系における情報スペクトルを用いた情報理論への統一的アプローチ International conference

    林 正人

    研究集会:「代数幾何学とその新しい展開」  2008 

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    Event date: 2008

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  142. 古典・量子系におけるランダム符号化 International conference

    林 正人

    DEX-SMI 2008 チュートリアル, 「情報統計力学と量子情報」  2008 

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    Event date: 2008

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  143. Universal protocols in quantum information International conference

    GSIS Workshop on Quantum Information Theory  2008 

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    Event date: 2008

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  144. Universal information protocols in quantum information theory International conference

    Information and Communication , Alfred Renyi Institute of Mathematics, Hungary  2008 

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    Event date: 2008

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  145. Universal coding for classical-quantum channel International conference

    2008 

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    Event date: 2008

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  146. Universal approximation of multi-copy states and universal quantum lossless data compression International conference

    2008 

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    Event date: 2008

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  147. 弱コヒーレント光によるセキュリティ精度保証付き量子鍵配送

    林 正人, 富田 章久, 長谷川 淳, 廣嶋 透也

    電子情報通信学会技術研究報告. IT, 情報理論 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    不完全な量子状態による量子鍵配送にデコイ法の適用を考え,有限長の符号の場合での安全性公式を導出した.この解析は,実装された量子鍵配送装置の安全性を保証するために大変有効である.特に,ダークカウントや真空状態の効果も考慮に入れた.

  148. A general entropic approach to the information-disturbance tradeoff problem in quantum measurements International conference

    Third Asia Pacific Conference on Quantum Information Science  2007 

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    Event date: 2007

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  149. Error exponent in asymmetric quantum hypothesis testing and its application to classical-quantum channel coding International conference

    2007 

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    Event date: 2007

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  150. Entanglement and group symmetries: stabilizer, symmetric and antisymmetric states International conference

    2007 

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    Event date: 2007

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  151. 21pWA-2 Classical and Quantum Coding Theory Invited International conference

    Hayashi Masahito

    Meeting Abstracts of the Physical Society of Japan 

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    Event date: 2007

    Language:Japanese   Presentation type:Oral presentation (general)  

    DOI: 10.11316/jpsgaiyo.62.1.2.0_316_2

  152. Information gain and approximate reversibility of quantum measurements:an entropic approach International conference

    2007 

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    Event date: 2007

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  153. General theory for decoy-state quantum key distribution with arbitrary number of intensities International conference

    2007 

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    Event date: 2007

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  154. State Discrimination of Entangled State by Local Operations International conference

    Noise Information & Complexity @ Quantum Scale  2007 

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    Event date: 2007

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  155. 有限長符号での無条件安全性を保証したデコイ法による量子鍵配送の数値解析 International conference

    林 正人

    電子情報通信学会第16回量子情報技術研究会(QIT16)  2007 

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    Event date: 2007

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  156. 局所操作による状態識別-双方向古典通信と一方向古典通信の違い- International conference

    林 正人

    DEX-SMI 2007 研究成果発表会  2007 

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    Event date: 2007

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  157. Theoretical analysis and implementation on QKD with the decoy-state method International conference

    Third Asia Pacific Conference on Quantum Information Science  2007 

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    Event date: 2007

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  158. Theoretical analysis and implementation on QKD with the decoy-state method International conference

    KIAS-KAIST 2007 Workshop on Quantum Information Science  2007 

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    Event date: 2007

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  159. 実用的な設定での量子鍵配送の安全性評価 International conference

    林 正人

    日本物理学会北陸支部講演会  2007 

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  160. 双方向古典通信による、エンタングル状態の局所的識別性の著しい改善について International conference

    林 正人

    電子情報通信学会第16回量子情報技術研究会(QIT16)  2007 

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    Event date: 2007

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  161. デコイ法を用いた量子鍵配送の安全性理論解析 International conference

    林 正人

    電子情報通信学会第16回量子情報技術研究会(QIT16)  2007 

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    Event date: 2007

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  162. Upper bounds of eavesdropper’s performances in finite-length code with decoy method International conference

    林 正人

    日本数学会2007年度秋季総合分科会・東北大学  2007 

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  163. (4,1)-Quantum Random Access Coding Does Not Exist - One qubit is not enough to recover one of four bits - International conference

    HAYASHI MASAHITO

    Asian conference on Quantum Information Science 2006 (AQIS 06) 

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    Event date: 2006

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  164. (4,1)-Quantum Random Access Coding Does Not Exist - One qubit is not enough to recover one of four bits - International conference

    Asian conference on Quantum Information Science 2006 (AQIS 06) 

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    Event date: 2006

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  165. (4,1)-quantum random access coding does not exist International conference

    Hayashi Masahito, Iwama Kazuo, Nishimura Harumichi, Raymond Rudy, Yamashita Shigeru

    2006 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY, VOLS 1-6, PROCEEDINGS 

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    Event date: 2006

    Language:English   Presentation type:Oral presentation (general)  

  166. AP-1-1 ADDITIVITY PROBLEMS IN QUANTUM INFORMATION THEORY Invited

    Hayashi Masahito

    Proceedings of the Society Conference of IEICE 

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    Event date: 2005.9

    Language:English   Presentation type:Oral presentation (invited, special)  

  167. Hypotheses testing for maximally entangled state (Statistical Inference of Records and Related Statistics)

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    Event date: 2005.7

    Language:Japanese   Presentation type:Oral presentation (general)  

  168. Characterization of several kinds of quantum analogues of relative entropy International conference

    HAYASHI MASAHITO

    2nd International Symposium on Information Geometry and its Applications 

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    Event date: 2005

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  169. LOCCによるエンタングルメントのUMP不変検定 International conference

    林 正人

    日本数学会秋季総合分科会統計数学分科会 

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    Event date: 2004

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  170. Can quantum non-locality improve quantum estimation? Invited International conference

    HAYASHI MASAHITO

    Non-locality of Quantum Mechanics and Statistical Inference 

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    Event date: 2003

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  171. SU(2)作用のエンタングルメントを用いた推定

    電子情報通信学会第9回量子情報技術研究会(QIT9) 

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    Event date: 2003

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  172. Quantum Statistical Inference Invited

    Hayashi Masahito

    Proceedings of the IEICE General Conference 

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    Event date: 2002.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  173. A general formula for the classical capacity of a general quantum channel International conference

    Hayashi M, Nagaoka H

    ISIT: 2002 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY, PROCEEDINGS 

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    Event date: 2002

    Language:English   Presentation type:Oral presentation (general)  

  174. Subnormal operators regarded as generalized observables and compound-system-type normal extension related to su(1,1) International conference

    Quantum Communication Measurement & Computing 2000 

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    Event date: 2000.7

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  175. On the eigenvector problem and the uncertainty relation with respect to the squeezing parameters of squeezed states International conference

    6th International Conference on Squeezed States and Uncertainty Relations 

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    Event date: 1999.5

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  176. "量子仮説検定における漸近的に最適な測定と表現論"

    第8回「非平衡系の統計物理シンポジウム」 

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    Event date: 1999

    Language:Japanese   Presentation type:Oral presentation (general)  

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  177. Affinity を用いた漸近理論

    京都大学数理解析研究所研究集会``Statistical Region Estimation and Its Application'' 

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    Event date: 1999

    Language:Japanese   Presentation type:Oral presentation (general)  

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  178. The asymptotic attainable Crame'r-Rao type bound for spin system 3-parameter model International conference

    5th International Conference on Squeezed States and Uncertainty Relations 

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    Event date: 1997.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Hungary  

  179. The asymptotic attainable Cramér-Rao type bound for spin 1/2 system 3-parameter model International conference

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    Event date: 1997

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  180. Quantum capacity and degraded channel International conference

    Multicritical Behaviour of Spin Glasses and Quantum Error Correcting Codes (MBQEC)  2008 

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  181. Universally Attainable Error and Information Exponents, and Equivocation Rate for the Broadcast Channels with Confidential Messages International conference

    Forty-Ninth Annual Allerton Conference  2011 

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  182. Discrimination of two channels by adaptive methods International conference

    第31回情報理論とその応用シンポジウム(SITA2008)  2008 

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  183. Discrimination of two channels by adaptive methods and its application to quantum system International conference

    Sendai-Workshop 2008  2008 

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  184. Error exponent in asymmetric quantum hypothesis testing and its application to classical-quantum channel coding International conference

    日本数学会2007年度秋季総合分科会・東北大学  2007 

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  185. Experimental Decoy State Quantum Key Distribution with Unconditional Security Incorprorating Finite Statistics International conference

    ナノ光・電子デバイスと量子エレクトロニクス  2007 

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  186. Experimental Decoy State Quantum Key Distribution with Unconditional Security Incorprorating Finite Statistics International conference

    ナノ光・電子デバイスと量子エレクトロニクス  2007 

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  187. Exponential evaluations in universal random privacy amplification International conference

    情報理論研究会(IT)  2009 

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  188. Fourier analytic approach to phase estimation International conference

    第31回情報理論とその応用シンポジウム(SITA2008)  2008 

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  189. Fourier Analytic Approach to Phase Estimation International conference

    The Twelfth Workshop on Quantum Information Processing  2009 

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  190. Fourier Analytic Method in Phase Estimation Problem International conference

    Sendai-Workshop 2008  2008 

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  191. Quantum universal coding protocols and universal approximation of multi-copy states International conference

    電子情報通信学会第19回量子情報技術研究会(QIT19)  2008 

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  192. Quantum universal coding protocols and universal approximation of multi-copy states International conference

    The 6th Joint meeting of Chinese Physicist Worldwide (OCPA6)  2009 

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  193. Quantum Universal Coding Protocols and Universal approximation of multi-copy states International conference

    International Conferrence on Quantum Information and Technology  2009 

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  194. Upper bounds of eavesdropper’s performances in finite-length code with decoy method International conference

    日本数学会2007年度秋季総合分科会・東北大学  2007 

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  195. State Discrimination of Entangled State by Local Operations International conference

    Noise Information & Complexity @ Quantum Scale  2007 

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  196. Theoretical analysis and implementation on QKD with the decoy-state method International conference

    KIAS-KAIST 2007 Workshop on Quantum Information Science  2007 

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  197. Theoretical analysis and implementation on QKD with the decoy-state method International conference

    Third Asia Pacific Conference on Quantum Information Science  2007 

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  198. Universal approximation of multi-copy states and universal quantum lossless data compression International conference

    第31回情報理論とその応用シンポジウム(SITA2008)  2008 

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  199. Universal coding for classical-quantum channel International conference

    第31回情報理論とその応用シンポジウム(SITA2008)  2008 

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  200. Universal information protocols in quantum information theory International conference

    Information and Communication , Alfred Renyi Institute of Mathematics, Hungary  2008 

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  201. Universal protocols in quantum information International conference

    GSIS Workshop on Quantum Information Theory  2008 

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  202. 情報スペクトルによる二次オーダーの情報理論 International conference

    電子情報通信学会 情報理論研究会(IT)  2011 

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  203. 情報スペクトルによる二次オーダーの情報理論 International conference

    電子情報通信学会 情報理論研究会(IT)  2011 

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  204. 弱コヒーレント光によるセキュリティ精度保証つき量子鍵配送 International conference

    情報理論研究会  2007