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Kuwahara Tomotaka  桑原 知剛

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桑原知剛

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Researcher Number 70757773
Other IDs
Affiliation (Current) 2025: 国立研究開発法人理化学研究所, 量子コンピュータ研究センター, 理研白眉研究チームリーダー
Affiliation (based on the past Project Information) *help 2023 – 2024: 国立研究開発法人理化学研究所, 量子コンピュータ研究センター, 理研白眉研究チームリーダー
2018 – 2021: 国立研究開発法人理化学研究所, 革新知能統合研究センター, 研究員
Review Section/Research Field
Principal Investigator
Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
Except Principal Investigator
Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related / Broad Section J
Keywords
Principal Investigator
縮約アルゴリズム / 多体問題 / エントロピー / 量子ギブスサンプリング / 量子シミュレーション / トポロジカル秩序 / 量子情報 / 情報理論 / Area law conjecture / 密度行列繰り込み群法 … More / 基底状態 / 計算複雑性 / エンタングルメント / 情報 / 量子多体系 / 長距離量子もつれ / クラスタリング定理 / 有限温度 / 熱平衡状態 / テンソルネットワーク / 境界則 / リープ・ロビンソン限界 / 量子コンピュータ / 長距離相互作用系 / 量子もつれ / ハミルトニアン複雑性 … More
Except Principal Investigator
情報伝搬 / 速度限界 / 非平衡熱力学 / 量子多体複雑性 / 計算量理論 / セキュア量子プロトコル / 分散型量子計算 Less
  • Research Projects

    (3 results)
  • Research Products

    (27 results)
  • Co-Researchers

    (6 People)
  •  Foundations of Secure Distributed Quantum Computing on Medium-Scale Quantum Computers

    • Principal Investigator
      ルガル フランソワ
    • Project Period (FY)
      2024 – 2028
    • Research Category
      Grant-in-Aid for Scientific Research (S)
    • Review Section
      Broad Section J
    • Research Institution
      Nagoya University
  •  速度限界と情報伝播に関する理論的研究

    • Principal Investigator
      齊藤 圭司
    • Project Period (FY)
      2023 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
    • Research Institution
      Kyoto University
  •  Computational complexity of quantum many-body problem in terms of Tensor Network formalismPrincipal Investigator

    • Principal Investigator
      Kuwahara Tomotaka
    • Project Period (FY)
      2018 – 2021
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
    • Research Institution
      Institute of Physical and Chemical Research

All 2022 2021 2020 2018

All Journal Article Presentation

  • [Journal Article] Exponential Clustering of Bipartite Quantum Entanglement at Arbitrary Temperatures2022

    • Author(s)
      Kuwahara Tomotaka、Saito Keiji
    • Journal Title

      Physical Review X

      Volume: 12 Issue: 2 Pages: 021022-021022

    • DOI

      10.1103/physrevx.12.021022

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-19H05603, KAKENHI-PLANNED-19H05791
  • [Journal Article] Fate of Measurement-Induced Phase Transition in Long-Range Interactions2022

    • Author(s)
      Minato Takaaki、Sugimoto Koudai、Kuwahara Tomotaka、Saito Keiji
    • Journal Title

      Physical Review Letters

      Volume: 128 Issue: 1 Pages: 010603-010603

    • DOI

      10.1103/physrevlett.128.010603

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-19K14644, KAKENHI-PROJECT-19H05603, KAKENHI-PROJECT-20H01849, KAKENHI-PLANNED-19H05791
  • [Journal Article] Many-body scar state intrinsic to periodically driven system2021

    • Author(s)
      Sho Sugiura, Tomotaka Kuwahara, Keiji Saito
    • Journal Title

      Physical Review Research (Letter)

      Volume: 3 Issue: 1

    • DOI

      10.1103/physrevresearch.3.l012010

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-16H02211
  • [Journal Article] Absence of Fast Scrambling in Thermodynamically Stable Long-Range Interacting Systems2021

    • Author(s)
      Tomotaka Kuwahara, Keiji Saito
    • Journal Title

      Physical Review Letters

      Volume: 126 Issue: 3 Pages: 030604-030604

    • DOI

      10.1103/physrevlett.126.030604

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-19H05603, KAKENHI-PROJECT-16H02211
  • [Journal Article] Sample-efficient learning of interacting quantum systems2021

    • Author(s)
      Anshu Anurag、Arunachalam Srinivasan、Kuwahara Tomotaka、Soleimanifar Mehdi
    • Journal Title

      Nature Physics

      Volume: 17 Issue: 8 Pages: 931-935

    • DOI

      10.1038/s41567-021-01232-0

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Journal Article] Lieb-Robinson Bound and Almost-Linear Light Cone in Interacting Boson Systems2021

    • Author(s)
      Kuwahara Tomotaka、Saito Keiji
    • Journal Title

      Physical Review Letters

      Volume: 127 Issue: 7 Pages: 070403-070403

    • DOI

      10.1103/physrevlett.127.070403

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-19H05603
  • [Journal Article] Improved Thermal Area Law and Quasilinear Time Algorithm for Quantum Gibbs States2021

    • Author(s)
      Tomotaka Kuwahara, Alvaro Alhambra, Anurag Anshu
    • Journal Title

      Physical Review X

      Volume: 11 Issue: 1 Pages: 011047-011047

    • DOI

      10.1103/physrevx.11.011047

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Journal Article] Gaussian concentration bound and Ensemble equivalence in generic quantum many-body systems including long-range interactions2020

    • Author(s)
      Tomotaka Kuwahara, Keiji Saito
    • Journal Title

      Annals of Physics

      Volume: 421 Pages: 168278-168278

    • DOI

      10.1016/j.aop.2020.168278

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Journal Article] Area law of noncritical ground states in 1D long-range interacting systems2020

    • Author(s)
      Tomotaka Kuwahara, Keiji Saito
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 4478-4478

    • DOI

      10.1038/s41467-020-18055-x

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-19H05603, KAKENHI-PROJECT-16H02211
  • [Journal Article] Clustering of Conditional Mutual Information for Quantum Gibbs States above a Threshold Temperature2020

    • Author(s)
      Tomotaka Kuwahara, Kohtaro Kato, Fernando Brandao
    • Journal Title

      Physical Review Letters

      Volume: 124 Issue: 22 Pages: 220601-220601

    • DOI

      10.1103/physrevlett.124.220601

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Journal Article] Clustering of conditional mutual information for quantum Gibbs states above a threshold temperature2020

    • Author(s)
      Tomotaka Kuwahara, Kohtaro Kato, Fernando Brandao
    • Journal Title

      Physical Review Letters

      Volume: -

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Journal Article] Eigenstate Thermalization from the Clustering Property of Correlation2020

    • Author(s)
      Tomotaka Kuwahara, Keiji Saito
    • Journal Title

      Physical Review Letters

      Volume: 124 Issue: 20 Pages: 200604-200604

    • DOI

      10.1103/physrevlett.124.200604

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-16H02211
  • [Journal Article] Strictly Linear Light Cones in Long-Range Interacting Systems of Arbitrary Dimensions2020

    • Author(s)
      Tomotaka Kuwahara, Keiji Saito
    • Journal Title

      Physical Review X

      Volume: 10 Issue: 3 Pages: 031010-031010

    • DOI

      10.1103/physrevx.10.031010

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K13475, KAKENHI-PROJECT-19H05603, KAKENHI-PROJECT-16H02211, KAKENHI-PLANNED-19H05791
  • [Journal Article] Heating in Integrable Time-Periodic Systems2018

    • Author(s)
      石井隆、桑原知剛、森貴司、羽田野直道
    • Journal Title

      Physical Review Letters

      Volume: 120 Issue: 22 Pages: 220602-220602

    • DOI

      10.1103/physrevlett.120.220602

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Exponential clustering of bipartite quantum entanglement at arbitrary temperatures2022

    • Author(s)
      Tomotaka Kuwahara
    • Organizer
      QIP 2022, 25th Annual Conference on Quantum Information Processing
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Sample-efficient learning of interacting quantum systems2021

    • Author(s)
      Tomotaka Kuwahara, Alvaro Alhambra, Anurag Anshu
    • Organizer
      QIP 2021, 24th Annual Conference on Quantum Information Processing
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] ハミルトニアン学習のサンプル複雑性2021

    • Author(s)
      桑原知剛
    • Organizer
      コンピュテーション研究会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Lieb-Robinson bound and almost linear light cone in interacting boson systems2021

    • Author(s)
      Tomotaka Kuwahara
    • Organizer
      TQC 2021, 16th Conference on the Theory of Quantum Computation, Communication and Cryptography
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Information propagation in long-range interacting systems2021

    • Author(s)
      Tomotaka Kuwahara
    • Organizer
      YITP workshop, Recent progress in theoretical physics based on quantum information theory
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Improved Thermal Area Law and Quasilinear Time Algorithm for Quantum Gibbs States2021

    • Author(s)
      Anurag Anshu, Srinivasan Arunachalam, Tomotaka Kuwahara, Mehdi Soreimanifar
    • Organizer
      QIP 2021, 24th Annual Conference on Quantum Information Processing
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Strictly Linear Light Cones in Long-Range Interacting Systems of Arbitrary Dimensions2020

    • Author(s)
      Tomotaka Kuwahara, Keiji Saito
    • Organizer
      TQC 2020, 15th Conference on the Theory of Quantum Computation, Communication and Cryptography
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Area law and clustering of information in non-critical long-range interacting systems2020

    • Author(s)
      桑原知剛
    • Organizer
      23rd Annual Conference on Quantum Information Processing (QIP2020)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] 長距離相互作用系における厳密な線形光 円錐2020

    • Author(s)
      桑原知剛
    • Organizer
      量子多体系の熱力学ーー数理の発展と展望
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Sample-efficient learning of interacting quantum systems2020

    • Author(s)
      Anurag Anshu, Srinivasan Arunachalam, Tomotaka Kuwahara, Mehdi Soreimanifar
    • Organizer
      The 61st Annual Symposium on Foundations of Computer Science (FOCS 2020)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Area law and clustering of information in non-critical long-range interacting systems2020

    • Author(s)
      Tomotaka Kuwahara, Kohtaro Kato, Keiji Saito, Fernando Brandao
    • Organizer
      QIP 2020, 23rd Annual Conference on Quantum Information Processing
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] 量子多体系の複雑性の情報論的解析2020

    • Author(s)
      桑原知剛
    • Organizer
      物理工学の新展開
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13475
  • [Presentation] Heating in integrable time-periodic systems2018

    • Author(s)
      桑原知剛
    • Organizer
      Symposium on Floquet Theory : Fundamentals and Applications
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13475
  • 1.  ルガル フランソワ (50584299)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 2.  田中 圭介 (20334518)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  西村 治道 (70433323)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  河内 亮周 (00397035)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  安永 憲司 (50510004)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  齊藤 圭司 (90312983)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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