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

Group-velocity-mismatched optical Kerr effect in optical fiber toward deterministic single-photon switching

Research Project

Project/Area Number 21K18902
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 30:Applied physics and engineering and related fields
Research InstitutionTohoku University

Principal Investigator

Kaneda Fumihiro  東北大学, 理学研究科, 教授 (80822478)

Co-Investigator(Kenkyū-buntansha) BAEK SOYOUNG  東北大学, 電気通信研究所, 助教 (70826172)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords光子 / 光スイッチ / 量子光学 / 単一光子 / 光カー効果
Outline of Research at the Start

単一光子は量子情報処理における有力な量子ビット媒体であり、その操作には極限の低損失化、高速化、高精度化が要求されている。しかし、ほぼ全ての光スイッチング素子は、その物理的大きさによって、低損失性か高速性の一方しか達成できていない。本研究では、現在成功的に商用化されている数少ない低損失光閉じ込めデバイスである光ファイバーと、その内部で起こる、高速な光パルスの重なりに基づく全光学的単一光子スイッチングを実証する。

Outline of Final Research Achievements

We first performed the characterization of a standard optical fiber cable at the wavelengths of 1550 nm and 1300 nm. We observed that a generation probability of a noise photon per gate pulse (at 1550 nm) is 10^-7 and polarization rotation in the fiber is correctable by additional polarization optics. This indicates that the our proposed group-velocity-mismatched Kerr effect in a optical fiber is a promising method for demonstrating low-noise and low-loss polarization switching of single photons. We expect that single-photon polarization switching will be demonstrated in our laboratory after amplifying the gate optical pulses from our laser source.
In the project, we have also demonstrated the design method of the generation of high-purity single photons at 1300 nm and low-loss polarization-maintaining electro-optic router compatible with single photons. Those will be a fundamental components for future photonic quantum information applications.

Academic Significance and Societal Importance of the Research Achievements

本研究では、将来の量子情報技術の大規模化、多チャンネル化において重要技術となる、高速、高精度、低損失な単一光子のスイッチングの実現を目標として光ファイバーによる群速度不整合カー効果に基づく単一光子スイッチングの研究を実施した。光ファイバーの古典光学的な評価により、十分なゲートパルスエネルギーによって群速度不整合カー効果の観測は可能であることが明らかになった。また、電気光学スイッチにおいて、新たな干渉計や電気光学素子の構成、配置を考案し、任意偏光を維持する単一光子スイッチの実現に成功した。以上の成果は光子やその偏光を量子情報担体として利用する通信システムの大規模化に貢献することが期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (19 results)

All 2024 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (18 results) (of which Int'l Joint Research: 5 results,  Invited: 5 results)

  • [Journal Article] Low-loss polarization-maintaining optical router for photonic quantum information processing2024

    • Author(s)
      Wang Pengfei、Baek Soyoung、Edamatsu Keiichi、Kaneda Fumihiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 63 Issue: 4 Pages: 040901-040901

    • DOI

      10.35848/1347-4065/ad3533

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Engineering Spatial Entanglement of Photon Pairs Generated from Parametric Down-Conversion2023

    • Author(s)
      Soyoung Baek, Fumihiro Kaneda, Yasuyoshi Mitsumori, and Keiichi Edamatsu
    • Organizer
      Optica Quantum 2.0 Conference and Exhibition
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental Single-qubit Variable-strength Measurement Using a Quantum Computer2023

    • Author(s)
      Tingrui Dong, Soyoung Baek, Fumihiro Kaneda, and Keiichi Edamatsu
    • Organizer
      Optica Quantum 2.0 Conference and Exhibition
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spectrally Pure Heralded Single Photons at Telecommunication O-Band from a Custom-Poled KTiPO4 Crystal2023

    • Author(s)
      Wu-Hao Cai, Rui-Bo Jin, Keiichi Edamatsu, and Fumihiro Kaneda
    • Organizer
      Optica Quantum 2.0 Conference and Exhibition
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Time Multiplexing for High-Efficiency Generation of Single and Entangled Photons2023

    • Author(s)
      Fumihiro Kaneda
    • Organizer
      IWSQMD2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Electro-optic switch towards polarization-independent single-photon routing II2023

    • Author(s)
      Pengfei Wang, Keiichi Edamatsu, Fumihiro Kaneda
    • Organizer
      日本物理学会 年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 変調された分極反転KTiOPO4結晶による高不可識別性光子対の発生2023

    • Author(s)
      狩野信茂, 枝松圭一, 金田文寛
    • Organizer
      日本物理学会 年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Spectrally Pure Heralded Single Photons at Telecommunication O-Band from a Custom-Poled KTiPO4 Crystal2023

    • Author(s)
      蔡吾豪, 枝松圭一, 金田文寛
    • Organizer
      日本物理学会 年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 量子コンピュータにおける一般化非破壊完全ベル測定の実証2023

    • Author(s)
      Tingrui Dong, Beak Soyoung, 金田文寛, 枝松圭一
    • Organizer
      日本物理学会 年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] パラメトリック下方変換により発生した光子対の位置-運動量エンタングルメント制御2023

    • Author(s)
      Wenrui Li, Soyoung Baek, 枝松圭一
    • Organizer
      日本物理学会 年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Multiplexing toward high-efficiency single- and multi-photon generation2022

    • Author(s)
      Fumihiro Kaneda
    • Organizer
      The 15th Asia Pacific Physics Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Optimized Design of the Lithium Niobate for Spectrally-Pure-State Generation at MIR Wavelengths Using Metaheuristic Algorithm2022

    • Author(s)
      Wu-Hao Cai, Fumihiro Kaneda, Keiichi Edamatsu, and Rui-Bo Jin
    • Organizer
      The 5th International Forum on Quantum Metrology and Sensing
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光子を用いた量子の基礎および応用技術の研究2022

    • Author(s)
      金田 文寛
    • Organizer
      東北大学物理教室コロキウム
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 時間多重化による高効率量子光源の研究2022

    • Author(s)
      金田 文寛
    • Organizer
      物性物理オンラインセミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 多重化伝令付き単一光子源の開発2022

    • Author(s)
      金田 文寛
    • Organizer
      量子情報関西Student Chapter
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Electro-optic switch toward polarization-independent single-photon routing2022

    • Author(s)
      Pengfei Wang, Keiichi Edamatsu, Fumihiro Kaneda
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Pure single-photon generation using a domain-engineered nonlinear optical crystal2022

    • Author(s)
      Fumihiro Kaneda
    • Organizer
      FRIS/TI-FRIS annual meeting
    • Related Report
      2021 Research-status Report
  • [Presentation] 時間多重化による量子光源の研究2022

    • Author(s)
      金田文寛
    • Organizer
      レーザー学会学術講演会第42回年次大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 小さな光子の積み重ね:多重化光子源2021

    • Author(s)
      金田文寛
    • Organizer
      FRIS Hub meeting
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi