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Quantum information processing using nonlinear interaction between single photons

Research Project

Project/Area Number 18K13487
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
Research InstitutionNational Institute of Information and Communications Technology

Principal Investigator

Tsujimoto Yoshiaki  国立研究開発法人情報通信研究機構, 未来ICT研究所量子ICT先端開発センター, 研究員 (80807470)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords量子光学 / 量子情報 / 量子通信 / 量子暗号 / 非線形光学 / 量子情報処理 / 単一光子 / パラメトリック下方変換
Outline of Final Research Achievements

Nonlinear interaction between single photons is an interesting tool to realize new quantum information processing which cannot be achieved only by using linear optics. We focus on the entanglement swapping, which is a quantum operation to connect two independently generated entangled photon pairs, via sum frequency generation (SFG) between single photons. Specifically, we developed a new system to efficiently generate and detect entangled photon pairs, and a new SFG system to efficiently induce nonlinear interaction.

Academic Significance and Societal Importance of the Research Achievements

単一光子間の非線形光学効果は光量子情報処理において非常に魅力的なツールである。例えば、量子通信においては装置無依存量子鍵配送を長距離化でき、量子計算においては量子計算機の構成を大幅に簡略化することが可能となる。当該研究期間中に実証実験を行うには至らなかったが、その為に我々が開発した量子もつれ光子対の高効率な生成/検出システムは、成功確率が低い実験や、ロスの大きいフィールド実験において有用である。また、今回開発したSFGモジュールは高効率な波長変換デバイスとして応用でき、相互作用波長が異なる物理系をリンクする際に有用である。

Report

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

    (13 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] ルイジアナ州立大学(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Heralded amplification of nonlocality via entanglement swapping2020

    • Author(s)
      Tsujimoto Yoshiaki、You Chenglong、Wakui Kentaro、Fujiwara Mikio、Hayasaka Kazuhiro、Miki Shigehito、Terai Hirotaka、Sasaki Masahide、Dowling Jonathan P、Takeoka Masahiro
    • Journal Title

      New Journal of Physics

      Volume: 22 Issue: 2 Pages: 023008-023008

    • DOI

      10.1088/1367-2630/ab61da

    • NAID

      130008153628

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Robust entanglement distribution via telecom fibre assisted by an asynchronous counter-propagating laser light2020

    • Author(s)
      Miyanishi Koichiro、Tsujimoto Yoshiaki、Ikuta Rikizo、Miki Shigehito、Yabuno Masahiro、Yamashita Taro、Terai Hirotaka、Yamamoto Takashi、Koashi Masato、Imoto Nobuyuki
    • Journal Title

      npj Quantum Information

      Volume: 6 Issue: 1 Pages: 44-44

    • DOI

      10.1038/s41534-020-0273-5

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimal conditions for the Bell test using spontaneous parametric down-conversion sources2018

    • Author(s)
      Y. Tsujimoto, K. Wakui, M. Fujiwara, K. Hayasaka, S. Miki. H. Terai, M. Sasaki, and M. Takeoka
    • Journal Title

      Physical Review A

      Volume: 98 Issue: 6 Pages: 063842-063842

    • DOI

      10.1103/physreva.98.063842

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Optimal conditions for Bell test using spontaneous parametric down-conversion source2019

    • Author(s)
      逵本吉朗
    • Organizer
      International Symposium on Quantum Technologies (ISQT2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An optimal strategy to recover nonlocality of polarization-entangled state from a SPDC source via entanglement swapping relay2019

    • Author(s)
      逵本吉朗
    • Organizer
      CLEO/Europe-EQEC
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Heralded amplification of nonlocality via entanglement swapping for long-distance device-independent quantum key distribution2019

    • Author(s)
      逵本吉朗
    • Organizer
      第40回量子情報技術研究会 (QIT40)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Entanglement swappingによる伝令付き非局所性増幅2019

    • Author(s)
      逵本吉朗
    • Organizer
      物理学会第74回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 波形成形された超短単一光子パルスを用いた周波数域線形光量子回路の実現2019

    • Author(s)
      保坂有杜
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Optimal conditions for Bell test using spontaneous parametric down-conversion source2018

    • Author(s)
      逵本吉朗
    • Organizer
      8th International Conference on Quantum Cryptography (QCrypt 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] パラメトリック下方変換光子対源を用いたCHSH不等式の破れの最大化2018

    • Author(s)
      逵本吉朗
    • Organizer
      量子情報・物性の新潮流
    • Related Report
      2018 Research-status Report
  • [Presentation] Optimal conditions for Bell test using a spontaneous parametric down-conversion source2018

    • Author(s)
      逵本吉朗
    • Organizer
      第38回量子情報技術研究会 (QIT38)
    • Related Report
      2018 Research-status Report
  • [Presentation] SPDC光子対源を用いたCHSH不等式の破れの最大化2018

    • Author(s)
      逵本吉朗
    • Organizer
      物理学会第73回年次大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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