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2018 Fiscal Year Annual Research Report

Mathematical Studies of Fundamental Principles of Quantum Theory

Research Project

Project/Area Number 26247016
Research InstitutionNagoya University

Principal Investigator

小澤 正直  名古屋大学, 情報学研究科, 名誉教授 (40126313)

Co-Investigator(Kenkyū-buntansha) 浜田 充  玉川大学, 量子情報科学研究所, 教授 (10407679)
北島 雄一郎  日本大学, 生産工学部, 准教授 (40582466)
西村 治道  名古屋大学, 情報学研究科, 教授 (70433323)
Buscemi F.  名古屋大学, 情報学研究科, 准教授 (80570548)
Project Period (FY) 2014-04-01 – 2019-03-31
Keywords不確定性原理 / フォン・ノイマン代数 / 量子熱力学過程 / マジョライゼーション / 量子計算量理論 / 量子計算機の古典的検証問題 / 代数的場の量子論 / 局所性原理
Outline of Annual Research Achievements

【不確定性】有限自由度量子系に対するブランシャールの誤差擾乱関係式をさらに強力にした究極的な誤差擾乱関係式を2014年度に導いたが,その関係式を無限自由度系に拡張し,任意のフォン・ノイマン代数で成立することを示すことにより,無限自由度系における測定誤差と擾乱に関する不確定性原理を確立した.
【相補性】量子論の論理学的基礎付けとして量子集合論とトポス量子論が知られているが,両者を統一的に扱うための新しい集合論的枠組みを構築した.
【情報理論的非局所性】統計モデル比較理論の枠組みを熱力学に応用するため,任意の状態の間に一般化熱力学的状態変化(系のハミルトニアンによる1係数群に共変なトレース保存的完全正値写像)が存在するためのいくつかの新しい必要十分条件を導いた.この成果は,古典的な確率分布の間のマジョライゼーション順序を熱力学的量子状態に一般化する.
【計算量理論的非局所性】近年,注目を集めている,量子計算機の古典的検証問題に関する計算量理論的モデルとして,証明者が量子計算を行い,検証者が古典計算を行う対話型証明モデルを研究し,可解群の位数を求めるという計算代数における代表的な問題が検証可能であることを明らかにした.また,量子回路の第2フーリエ階層と呼ばれるクラスにおける2つの量子回路の出力分布の識別問題の検証可能性を示した.
【相対論的非局所性】代数的場の量子論において,局所性原理(ある時空領域における操作が他の空間的に離れた時空領域に影響を及ぼさないという原理)をどのように表すことができるかという問題を考察し,ある時空領域に影響を及ぼしその時空領域と空間的に離れた時空領域に影響を及ぼさないような操作は,完全正写像で表すことができることを示した.
【量子暗号】これまでにユニタリ演算子構成の定量的な限界式を得ているが,適用先となり得る物理系等に関する検討・サーベイを行った.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

  • Research Products

    (26 results)

All 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (15 results) (of which Int'l Joint Research: 10 results,  Invited: 8 results) Book (2 results)

  • [Int'l Joint Research] CQT, National University of Singapore(シンガポール)

    • Country Name
      SINGAPORE
    • Counterpart Institution
      CQT, National University of Singapore
  • [Journal Article] Soundness and completeness of quantum root-mean-square errors2019

    • Author(s)
      Masanao Ozawa
    • Journal Title

      npj Quantum Information

      Volume: 5 Pages: 1

    • DOI

      10.1038/s41534-018-0113-z

    • Peer Reviewed / Open Access
  • [Journal Article] An Expression for SU(2) Rotations2019

    • Author(s)
      Mitsuru Hamada
    • Journal Title

      Tamagawa University Quantum ICT Research Institute Bulletin

      Volume: 8 Pages: 27~29

    • Peer Reviewed
  • [Journal Article] Reverse Data-Processing Theorems and Computational Second Laws2018

    • Author(s)
      Francesco Buscemi
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 261 Pages: 135~159

    • DOI

      10.1007/978-981-13-2487-1_6

    • Peer Reviewed
  • [Journal Article] Quantum majorization and a complete set of entropic conditions for quantum thermodynamics2018

    • Author(s)
      Gilad Gour, David Jennings, Francesco Buscemi, Runyao Duan, Iman Marvian
    • Journal Title

      Nature Communications

      Volume: 9 Pages: 5352

    • DOI

      10.1038/s41467-018-06261-7

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impossibility of Classically Simulating One-Clean-Qubit Model with Multiplicative Error2018

    • Author(s)
      Keisuke Fujii, Hirotada Kobayashi, Tomoyuki Morimae, Harumichi Nishimura, Shuhei Tamate, Seiichiro Tani
    • Journal Title

      Physical Review Letters

      Volume: 120 Pages: 200502

    • DOI

      10.1103/PhysRevLett.120.200502

    • Peer Reviewed
  • [Journal Article] Merlin-Arthur with efficient quantum Merlin and quantum supremacy for the second level of the Fourier hierarchy2018

    • Author(s)
      Tomoyuki Morimae, Yuki Takeuchi, Harumichi Nishimura
    • Journal Title

      Quantum

      Volume: 2 Pages: 106~106

    • DOI

      10.22331/q-2018-11-15-106

    • Peer Reviewed / Open Access
  • [Journal Article] Local Operations and Completely Positive Maps in Algebraic Quantum Field Theory2018

    • Author(s)
      Yuichiro Kitajima
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 261 Pages: 83~95

    • DOI

      10.1007/978-981-13-2487-1_3

    • Peer Reviewed
  • [Journal Article] Contextuality in Algebraic Quantum Theory2018

    • Author(s)
      Yuichiro KITAJIMA
    • Journal Title

      Journal of the Japan Association for Philosophy of Science

      Volume: 45 Pages: 23~34

    • DOI

      10.4288/kisoron.45.1-2_23

    • Peer Reviewed / Open Access
  • [Presentation] State-dependent approach to quantum measurements and uncertainty relations2019

    • Author(s)
      Masanao Ozawa
    • Organizer
      Time and fundamentals of quantum mechanics (TFQM19)
    • Int'l Joint Research / Invited
  • [Presentation] Quantum statistical comparison, quantum majorization, and their applications to generalized resource theories2019

    • Author(s)
      Buscemi Francesco
    • Organizer
      Quantum Foundations Seminar Series, Perimeter Institute, Waterloo, Canada
    • Int'l Joint Research / Invited
  • [Presentation] Quantum Advantage for the LOCAL Model in Distributed Computing2019

    • Author(s)
      Francois Le Gall, Harumichi Nishimura, Ansis Rosmanis
    • Organizer
      36th International Symposium on Theoretical Aspects of Computer Science (STACS2019)
    • Int'l Joint Research
  • [Presentation] 符号理論・情報理論の幾つかの側面2019

    • Author(s)
      浜田 充
    • Organizer
      第17回 量子情報ミニワークショップ
  • [Presentation] Stern-Gerlach測定における誤差と擾乱の関係2018

    • Author(s)
      井上 由樹, 小澤 正直
    • Organizer
      第38回量子情報技術研究会 (QIT38)
  • [Presentation] Intersubjectivity of quantum measurement: Is the measurement value meaningless?2018

    • Author(s)
      Masanao Ozawa
    • Organizer
      Towards Ultimate Quantum Theory (UQT), International conference devoted to quantum theory, experiment and technology
    • Int'l Joint Research / Invited
  • [Presentation] Error-Disturbance Relation in Stern-Gerlach Measurements2018

    • Author(s)
      Yuki Inoue, Masanao Ozawa
    • Organizer
      18th Asian Quantum Information Science Conference (AQIS2018)
    • Int'l Joint Research
  • [Presentation] Rational proofs for quantum computing2018

    • Author(s)
      Tomoyuki Morimae, Harumichi Nishimura
    • Organizer
      18th Asian Quantum Information Science Conference (AQIS2018)
    • Int'l Joint Research
  • [Presentation] Interactive Proofs with Polynomial-Time Quantum Prover for Computing the Order of Solvable Groups2018

    • Author(s)
      Francois Le Gall, Tomoyuki Morimae, Harumichi Nishimura, Yuki Takeuchi
    • Organizer
      18th Asian Quantum Information Science Conference (AQIS2018)
    • Int'l Joint Research
  • [Presentation] From Boolean-valued analysis to quantum set theory2018

    • Author(s)
      Masanao Ozawa
    • Organizer
      Symposium on Advances in Mathematical Logic 2018 (SAML 2018): Takeuti Memorial Symposium
    • Int'l Joint Research / Invited
  • [Presentation] State-dependent approach to quantum measurements and universally valid uncertainty relations2018

    • Author(s)
      Masanao Ozawa
    • Organizer
      2018 International Workshop on Quantum Information, Quantum Computing and Quantum Control
    • Int'l Joint Research / Invited
  • [Presentation] 観測理論と Wigner-Araki-Yanase の定理, その後の発展2018

    • Author(s)
      小澤 正直
    • Organizer
      柳瀬睦男先生 帰天 10 周年記念フォーラム
    • Invited
  • [Presentation] Statistical comparison theory in quantum information and foundations2018

    • Author(s)
      Buscemi Francesco
    • Organizer
      Quantum Information Technology Symposium (QIT39)
    • Invited
  • [Presentation] 量子計算量クラスについて2018

    • Author(s)
      西村治道
    • Organizer
      ImPACT未来開拓研究会2018
    • Invited
  • [Presentation] Interactive Proofs with Polynomial-Time Quantum Prover for Computing the Order of Solvable Groups2018

    • Author(s)
      Francois Le Gall, Tomoyuki Morimae, Harumichi Nishimura, Yuki Takeuchi
    • Organizer
      43rd International Symposium on Mathematical Foundations of Computer Science (MFCS2018)
    • Int'l Joint Research
  • [Book] Reality and measurement in algebraic quantum theory: NWW 2015, Nagoya, Japan, March 9-132018

    • Author(s)
      Masanao Ozawa, Jeremy Butterfield, Hans Halvorson, Miklos Redei, Yuichiro Kitajima, Francesco Buscemi (共編)
    • Total Pages
      396+viii
    • Publisher
      Springer
    • ISBN
      9789811324864
  • [Book] 量子と情報: 量子の実在と不確定性原理2018

    • Author(s)
      小澤正直
    • Total Pages
      240
    • Publisher
      青土社
    • ISBN
      4791771109

URL: 

Published: 2019-12-27  

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