• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Optimal quantum state estimation strategy in the presence of unknown environment

Research Project

Project/Area Number 17K05571
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical physics/Fundamental condensed matter physics
Research InstitutionThe University of Electro-Communications

Principal Investigator

Suzuki Jun  電気通信大学, 大学院情報理工学研究科, 准教授 (70565332)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords量子推定 / 量子ノイズ / 撹乱パラメータ / 量子Fisher情報行列 / 実験計画法 / 量子情報幾何 / 量子状態推定 / 最適な測定 / 量子Fisher情報 / 量子情報 / 統計学
Outline of Final Research Achievements

In this project, we developed the general framework to analyze the parameter estimation problem when a quantum system of interest interacts with unknown environment. As the main result, we established the quantum estimation theory for quantum statistical models containing nuisance parameters. We extended the theory of optimal design of experiments to the more general setting such as quantum state and channel estimation problem. The proposed method were applied to find an optimal estimation strategy for quantum estimation problems in the presence of nuisance parameters. We characterized quantum statistical models based on the properties of tangent spaces. Our method aimed at unifying different choices of operator monotone metrics on the quantum state manifold in quantum information geometry. We applied our proposal to several examples in physical systems to illustrate effectiveness of our approach.

Academic Significance and Societal Importance of the Research Achievements

本研究の意義は、量子精密測定技術の発展に不可欠な基本問題に対し、これまでの物理的なアプローチでは扱うことができなかった、特定のノイズモデルを仮定せずかつ不確定な要素を含むノイズの影響下での量子状態推定問題に対する最適な量子推定方法の統計学的な理論枠組みの構築と現実の物理モデルでの評価である。本研究の結果は、数理統計学・物理学・量子情報理論の融合性により得られるものであり、基礎科学研究として重要であるとともに、より現実的な問題設定での理論展開へとつながるので、今後の量子精密測定技術の発展につながることが期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (27 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (6 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (17 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results)

  • [Int'l Joint Research] Yale-NUS College, NUS/Centre for Quantum Technologies, NUS(シンガポール)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Institute for Theoretical Physics, ETH(スイス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Department of Quantum Science, ANU(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] School of Electrical Engineering, KAIST(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Yale-NUS College, NUS/Centre for Quantum Technologies, NUS(シンガポール)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Center for Quantum Technologies, NUS/Yale-NUS College, NUS(Singapore)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Nuisance parameter problem in quantum estimation theory: Tradeoff relation and qubit examples2020

    • Author(s)
      Suzuki Jun
    • Journal Title

      Journal of Physics A: Mathematical and Theoretical

      Volume: 0 Issue: 26 Pages: 0-0

    • DOI

      10.1088/1751-8121/ab8672

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum state estimation with nuisance parameters2020

    • Author(s)
      J. Suzuki, Y. Yang, and M. Hayashi
    • Journal Title

      Journal of Physics A: Mathematical and Theoretical

      Volume: - Issue: 45 Pages: 0-0

    • DOI

      10.1088/1751-8121/ab8b78

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantum process tomography via optimal design of experiments2019

    • Author(s)
      Gazit Yonatan、Ng Hui Khoon、Suzuki Jun
    • Journal Title

      Physical Review A

      Volume: 100 Issue: 1 Pages: 012350-012350

    • DOI

      10.1103/physreva.100.012350

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Information Geometrical Characterization of Quantum Statistical Models in Quantum Estimation Theory2019

    • Author(s)
      Suzuki Jun
    • Journal Title

      Entropy

      Volume: 21 Issue: 7 Pages: 703-703

    • DOI

      10.3390/e21070703

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ロバスト統計を用いた外れ値のあるコヒーレント状態の位相推定2020

    • Author(s)
      本武行人,鈴木淳
    • Organizer
      2020年電子情報通信学会 総合大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Phase Estimation Problem in the Presence of Nuisance Parameters2019

    • Author(s)
      Jun Suzuki
    • Organizer
      XVI International Conference on Quantum Optics and Quantum Information
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Optimal estimation of noise asymmetry in the qubit Pauli channel via the theory of optimal design of experiments2019

    • Author(s)
      Yonatan Gazit, Hui Khoon Ng, Jun Suzuki
    • Organizer
      19th Asian Quantum Information Science Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Uncertainty relation for the position of an electron in a uniform magnetic field from quantum estimation theory2019

    • Author(s)
      Shin Funada, Jun Suzuki
    • Organizer
      19th Asian Quantum Information Science Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Error trade-off relations for two-parameter unitary model with commuting generators2019

    • Author(s)
      Shin Funada, Jun Suzuki
    • Organizer
      第41回量子情報技術研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Characterization of Quantum Parametric Models Based on One-Parameter Family of Quantum Fisher Metric2019

    • Author(s)
      Jun Suzuki
    • Organizer
      第42回情報理論とその応用シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Equivalence theorem and comparison of optimal designs in qubit systems2019

    • Author(s)
      Jun Suzuki
    • Organizer
      ISEC IT WBS 合同研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Characterization of classical statistical model for quantum parametric model2018

    • Author(s)
      Jun Suzuki
    • Organizer
      The 38th Quantum Information Technology Symposium (QIT38)
    • Related Report
      2018 Research-status Report
  • [Presentation] Uncertainty relation from parameter estimation of the position of an electron in a uniform magnetic field2018

    • Author(s)
      Shin Funada, Jun Suzuki
    • Organizer
      The 39th Quantum Information Technology Symposium (QIT39)
    • Related Report
      2018 Research-status Report
  • [Presentation] Parameter Estimation Problems in Quantum Systems and Optimal Design of Experiments2018

    • Author(s)
      Jun Suzuki
    • Organizer
      The 41st Symposium on Information Theory and its Applications (SITA2018)
    • Related Report
      2018 Research-status Report
  • [Presentation] Phase estimation of a qubit state interacting with unknown noise parameters2018

    • Author(s)
      Jun Suzuki
    • Organizer
      International Conference on challenges in Quantum Information Science, CQIS2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantum Information Geometry of a Qubit System: Parameter Estimation View2018

    • Author(s)
      Jun Suzuki
    • Organizer
      International Workshop on Quantum Information, Quantum Computing and Quantum Control (IWQIQC2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Classification and characterization of quantum parametric models in quantum estimation theory2018

    • Author(s)
      Jun Suzuki
    • Organizer
      Proc. of the 18th Asian Quantum Information Science Conference (AQIS2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Parameter orthogonalization method in quantum parameter estimation problem2018

    • Author(s)
      Jun Suzuki
    • Organizer
      IT・ISEC・WBS合同研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Phase estimation problem in open quantum systems with nuisance parameters: An analysis on the memory effect and achievability of the quantum Cramer-Rao bound2017

    • Author(s)
      Jun Suzuki
    • Organizer
      第36回量子情報技術研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Channel-parameter estimation problem in quantum systems from optimal design of experiments2017

    • Author(s)
      Jun Suzuki
    • Organizer
      第40回情報理論とその応用シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] Parameter Estimation of Quantum States from Optimal Design of Experiments2017

    • Author(s)
      Jun Suzuki
    • Organizer
      第37回量子情報技術研究会
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi