Updated on 2024/10/18

写真a

 
FURUTANI Koichiro
 
Organization
Institute for Advanced Research Designated assistant professor
Graduate School of Engineering Designated assistant professor
Title
Designated assistant professor

Degree 1

  1. Ph.D. （ 2024.2   University of Padova ） 

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Papers 11

  1. Interaction-induced dissipative quantum phase transition in a head-to-tail atomic Josephson junction Reviewed International coauthorship

    Koichiro Furutani, Luca Salasnich

    Physical Review B     2024.10

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

    DOI： https://doi.org/10.1103/PhysRevB.110.L140503

    DOI： 10.1103/PhysRevB.110.L140503

  2. Amplitude, phase, and topological fluctuations shaping the complex phase diagram of two-dimensional superconductors Reviewed International coauthorship

    Koichiro Furutani, Giovanni Midei, Andrea Perali, Luca Salasnich

    Physical Review B   ( 110 )   2024.10

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

    DOI： https://doi.org/10.1103/PhysRevB.110.134501

    DOI： 10.1103/PhysRevB.110.134501

  3. Fokker-Planck equations for a trapped particle in a quantum-thermal Ohmic bath: general theory and applications to Josephson junctions Invited Reviewed International coauthorship

    Koichiro Furutani, Luca Salasnich

    AAPPS Bulletin   ( 33 )   2023.9

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

    DOI： https://doi.org/10.1007/s43673-023-00087-2

    DOI： 10.1007/s43673-023-00087-2

  4. Berezinskii-Kosterlitz-Thouless phase transition with Rabi-coupled bosons Reviewed International coauthorship

    Koichiro Furutani, Andrea Perali, Luca Salasnich

    Physical Review A   ( 107 )   2023.4

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

    DOI： https://doi.org/10.1103/PhysRevA.107.L041302

    DOI： 10.1103/PhysRevA.107.L041302

  5. First and Second Sound in Two-Dimensional Bosonic and Fermionic Superfluids Invited Reviewed International coauthorship

    L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, G. Bighin

    Symmetry   ( 14 )   2022.10

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

    DOI： https://doi.org/10.3390/sym14102182

    DOI： 10.3390/sym14102182

  6. Quantum effective action for the bosonic Josephson junction Reviewed International coauthorship

    Koichiro Furutani, Jacques Tempere, Luca Salasnich

    Physical Review B   ( 105 )   2022.4

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

    DOI： https://doi.org/10.1103/PhysRevB.105.134510

    DOI： 10.1103/PhysRevB.105.134510

  7. Superfluid properties of bright solitons in a ring Reviewed International coauthorship

    Koichiro Furutani, Luca Salasnich

    Physical Review A   ( 105 )   2022.3

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

    DOI： https://doi.org/10.1103/PhysRevA.105.033320

    DOI： 10.1103/PhysRevA.105.033320

  8. Quantum and thermal fluctuations in the dynamics of a resistively and capacitively shunted Josephson junction Reviewed International coauthorship

    Koichiro Furutani, Luca Salasnich

    Physical Review B   ( 104 )   2021.7

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

    DOI： https://doi.org/10.1103/PhysRevB.104.014519

    DOI： 10.1103/PhysRevB.104.014519

  9. Dissipation and fluctuations in elongated bosonic Josephson junctions Reviewed International coauthorship

    Francesco Binanti, Koichiro Furutani, Luca Salasnich

    Physical Review A   ( 103 )   2021.6

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

    DOI： https://doi.org/10.1103/PhysRevA.103.063309

    DOI： 10.1103/PhysRevA.103.063309

  10. Sound modes in collisional superfluid Bose gases Reviewed International coauthorship

    Koichiro Furutani, Andrea Tononi, Luca Salasnich

    New Journal of Physics   ( 23 )   2021.4

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

    DOI： https://doi.org/10.1088/1367-2630/abed0c

    DOI： 10.1088/1367-2630/abed0c

  11. Strong-coupling Effects on Quantum Transport in an Ultracold Fermi Gas Reviewed

    Koichiro Furutani, Yoji Ohashi

    Journal of Low Temperature Physics   ( 201 ) page： 49 - 57   2020.6

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

    DOI： https://doi.org/10.1007/s10909-020-02482-7

    DOI： 10.1007/s10909-020-02482-7

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KAKENHI (Grants-in-Aid for Scientific Research) 1

  1. スピノル超流動を用いた多成分量子多体系の量子相制御

    Grant number：24K22858  2024.7 - 2026.3

    科学研究費助成事業  研究活動スタート支援

    古谷 浩一朗

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    Authorship：Principal investigator 

    Grant amount：\2730000 （ Direct Cost: \2100000 、 Indirect Cost：\630000 ）

    原子種やスピンといった多自由度によって実現する多成分量子多体系の静的・動的制御手法を理論的に開拓する。多成分系では、その自由度のため単成分系よりも多彩なトポロジカル励起が現れ、相転移や動的応答といったマクロな物理現象に新たな可能性を拓くが、その系統的理解は未だ得られていない。その包括的解明のため、本研究では操作性の高い冷却原子系を舞台とし、スピン自由度を持った超流動に現れるトポロジカル励起の代数構造の観点から、多成分量子系における相転移や動的応答の新奇な物理的性質とその制御手法を探索する。

To the head of KAKENHI (Grants-in-Aid for Scientific Research).▲