研究者詳細 - 林　正人

論文 - 林　正人

分割表示 388 件中 1 - 20 件目／全件表示 >>

Quantum state estimation with nuisance parameters (vol 53, 453001, 2020) 招待有り査読有り国際共著

Suzuki, J; Yang, YX; Hayashi, M

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL 57 巻 ( 12 ) 2024年3月

Tight Cramer-Rao type bounds for multiparameter quantum metrology through conic programming 査読有り国際共著

Hayashi, M; Ouyang, YK

QUANTUM 7 巻 2023年8月

Tight Exponential Analysis for Smoothing the Max-Relative Entropy and for Quantum Privacy Amplification 査読有り国際共著国際誌

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

IEEE Transactions on Information Theory 69 巻 ( 3 ) 頁： 1680 - 1694 2023年3月

Analytical algorithm for capacities of classical and classical-quantum channels,” 査読有り国際誌

M. Hayashi

IEEE Transactions on Information Theory 69 巻 ( 3 ) 頁： 885 - 898 2023年3月

Pseudo standard entanglement structure cannot be distinguished from standard entanglement structure 査読有り国際共著国際誌

H. Arai and M. Hayashi

New Journal of Physics 25 巻頁： 023009 2023年2月

Efficient algorithms for quantum information bottleneck 査読有り国際共著

Masahito Hayashi and Yuxiang Yang

Quantum 7 巻頁： 936 - 936 2023年2月

Dense Coding with Locality Restriction on Decoders: Quantum Encoders vs. Super-Quantum Encoders 査読有り国際共著国際誌

M. Hayashi and K. Wang

PRX QUANTUM 3 巻頁： 030346 - 030346 2022年9月

Graph-theoretic approach for selftesting in Bell scenarios 査読有り国際共著国際誌

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

PRX QUANTUM 3 巻頁： 030344 - 030344 2022年9月

Quantum Verifiable Protocol for Secure Modulo Zero-Sum Randomness 査読有り国際共著国際誌

M. Hayashi and T. Koshiba

Quantum Information Processing 21 巻頁： 291 - 291 2022年8月

Exponents in Smoothing the Max-Relative Entropy and of Randomness Extraction Against Quantum Side Information 査読有り国際共著国際誌

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

Proc. 2022 IEEE Int. Symp. Information Theory (ISIT) 頁： 1887 - 1892 2022年6月

Analytical Calculation Formulas for Capacities of Classical and Classical-Quantum Channels 査読有り国際誌

Hayashi M.

Proc. 2022 IEEE Int. Symp. Information Theory (ISIT) 頁： 109 - 114 2022年6月

Commitment Capacity of Classical-Quantum Channels 査読有り国際共著国際誌

M. Hayashi and N, Warsi,

Proc. 2022 IEEE Int. Symp. Information Theory (ISIT) 頁： 998 - 1003 2022年6月

Quantum Causal Unravelling 査読有り国際共著国際誌

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

npj Quantum Information 8 巻頁： 69 - 69 2022年6月

Quantum secure direct communication with private dense coding using a general preshared quantum state 査読有り国際共著国際誌

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

Physical Review Applied 17 巻頁： 064011 - 064011 2022年6月

Global Heisenberg scaling in noisy and practical phase estimation 査読有り国際共著国際誌

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

Quantum Science and Technology 7 巻 ( 2 ) 頁： 025030 - 025030 2022年4月

Optimum ratio between two bases in the Bennett-Brassard-1984 protocol with second-order analysis 査読有り国際共著国際誌

Hayashi M.

Physical Review A 105 巻頁： 042603 - 042603 2022年4月

Quantum-inspired secure wireless communication protocol under spatial and local Gaussian noise assumptions 査読有り国際共著

Hayashi M

10 巻頁： 29040 - 29068 2022年3月

Universal classical-quantum superposition coding and universal classical-quantum multiple access channel coding 査読有り国際共著

Hayashi M, Cai N.

68 巻 ( 3 ) 頁： 1822 - 1850 2022年2月

Computation-Aided Classical-Quantum Multiple Access to Boost Network Communication Speeds 査読有り国際共著

Hayashi M., Vázquez-Castro Á.

Physical Review Applied 16 巻 ( 4 ) 2021年11月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review Applied

A multiple access channel (MAC) consists of multiple senders simultaneously transmitting their messages to a single receiver. For the classical-quantum case (CQ MAC), achievable rates are known assuming that all the messages are decoded, a common assumption in quantum network design. However, such a conventional design approach ignores the global network structure, i.e., the network topology. When a CQ MAC is given as a part of quantum network communication, this work shows that computation properties can be used to boost communication speeds with code design dependent on the network topology. We quantify achievable quantum communication rates of codes with the computation property for a two-sender CQ MAC. When the two-sender CQ MAC is a boson coherent channel with binary discrete modulation, we show that it achieves the maximum possible communication rate (the single-user capacity), which cannot be achieved with conventional design. Further, such a rate can be achieved by different detection methods: quantum (with and without quantum memory), on-off photon counting, and homodyne (each at different photon power). Finally, we describe two practical applications, one of which cryptographic.

DOI： 10.1103/PhysRevApplied.16.054021

Scopus

Capacity of Quantum Private Information Retrieval with Colluding Servers 査読有り国際共著

Song S., Hayashi M.

IEEE Transactions on Information Theory 67 巻 ( 8 ) 頁： 5491 - 5508 2021年8月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Transactions on Information Theory

Quantum private information retrieval (QPIR) is a protocol in which a user retrieves one of multiple files from n non-communicating servers by downloading quantum systems without revealing which file is retrieved. As variants of QPIR with stronger security requirements, symmetric QPIR is a protocol in which no other files than the target file are leaked to the user, and t-private QPIR is a protocol in which 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 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/TIT.2021.3077269

Scopus

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