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Development of high-brightness and high-fidelity photon pair light source by compound optical resonator

Research Project

Project/Area Number 17K05071
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Optical engineering, Photon science
Research InstitutionThe University of Electro-Communications

Principal Investigator

Watanabe Masayoshi  電気通信大学, 大学院情報理工学研究科, 教授 (00175697)

Co-Investigator(Kenkyū-buntansha) 兵頭 政春  金沢大学, 機械工学系, 教授 (30359088)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords量子エレクトロニクス / レーザー / 量子光学 / 非線形光学結晶 / レーザー工学 / レーザー制御 / 応用光学
Outline of Final Research Achievements

In the generation control of the quantum light source, we conducted a study for the purpose of developing a basic light source that contributes to high fidelity that can efficiently generate photon pairs, and measured the basic characteristics by the method of photon interference. Using the principle of superposition of quantum states, based on the method of measuring two-photon interference, new wave function measurement is performed by methods such as maximum likelihood estimation and least squares method that continuously convert the phase and amplitude of auxiliary states. did. The de Broglie wavelength of three photons was measured by a method that differs from the conventional one by the interference between the quantum state and the classical state. Furthermore, we constructed a SPDC experimental system that generated single photons with high purity by Herald's method in the generation process for the purpose of improving visibility, and generated single photons of Herald.

Academic Significance and Societal Importance of the Research Achievements

光子にお代表される光の量子的性質は、情報通信、情報処理、計測などの将来への可能性として注目されている。特に、発生過程で二光子が同時に発生し量子固有の特性を共有する“光子対”の発生源が、基盤技術として重要である。しかし、発生過程は確率的であるため発生効率は一般に低く、実用化へのネックともなっている。本研究では、光パルスを効果的に適用した方法で発生過程の効率を高める技術を開発し、目的に応じ必要な光子対を集中的に高効率発生でき、なおかつ応用で量子特性がより確実に活用ができる光子対光源の技術開発を行うとともに発生光子の基礎特性の解明を行った。

Report

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

    (11 results)

All 2020 2019 2018 2017

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Frequency stabilization of dual-mode microchip laser by means of beat frequency stabilization2020

    • Author(s)
      Iyon Titok Sugiarto, Masayoshi Watanabe, Satoshi Sunada, and Masaharu Hyodo
    • Journal Title

      Journal: Optical Review

      Volume: 27(1) Issue: 1 Pages: 98-107

    • DOI

      10.1007/s10043-019-00571-x

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of the wavefunction for a biphoton state with homodyne detection using least squares estimation2020

    • Author(s)
      Yashuai Han; Daohua wu; Katsuyuki Kasai; Lirong Wang; Masayoashi Watanabe; Yun Zhang
    • Journal Title

      Journal of Optics

      Volume: 22 Issue: 2 Pages: 025202-025202

    • DOI

      10.1088/2040-8986/ab6422

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental observation of three-photon interference between a two-photon state and a weak coherent state on a beam splitter2018

    • Author(s)
      Tingyu Li, Saburo Sakurai KatuyukiKasai, Lirong Wang, Masayoshi Watanabe, Yun Zhang
    • Journal Title

      Optics Express

      Volume: 26 Pages: 20442-20449

    • Related Report
      2018 Research-status Report
  • [Journal Article] Controlling quantum interference in phase space with amplitude2017

    • Author(s)
      Yinghong Xue, Tingyu Li, Katsuyuki Kasai Yoshiko Okada-Shudo, Masayoshi Watanabe, Yun Zhang
    • Journal Title

      scientific reports

      Volume: 7 Pages: 241-244

    • DOI

      10.1016/j.optcom.2016.11.058

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Observation of two-photon interference with continuous variables via homodyne detection2017

    • Author(s)
      Daohua WU, K. Kasai, M. Watanabe and Y. Zhang
    • Journal Title

      The Europian Phisical Journal D

      Volume: 71 Issue: 10 Pages: 260-260

    • DOI

      10.1140/epjd/e2017-80379-y

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Observation of three-photon interference with Mach-Zehnder interferometer by injecting a classical weak coherent state and a quantum two-photon state2019

    • Author(s)
      Lifeng Duan; Masayoshi Watanabe; Yun Zhang
    • Organizer
      Optics & Photonics Japan 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interferometric measurement of wavefunction for biphoton state with homodyne detection technique2019

    • Author(s)
      Yun Zhang; Lirong Wang; Masayoshi Watanabe
    • Organizer
      Photonics Asia 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interferometric measurement of a biphoton state with continuous-variables by homodyne detection2019

    • Author(s)
      Yashuai Han、 Daohua Wu、 Katsuyuki Kasai、 Masayoshi Watanabe、 Yun Zhang
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Multi-photon interference between a two-photon state and a weak coherent state2018

    • Author(s)
      Yun Zhang, Lirong Wang, and Masayoshi Watanabe
    • Organizer
      The International Photonics and Optoelectronics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observation of two-photon interference for continuous variables with homodyne detection2017

    • Author(s)
      Daohua WU, Kota Kawamoto, K. Kasai, M. Watanabe and Y. Zhang
    • Organizer
      The 24th Congress of the International Commission for Optics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Generation of millimeter-wave signals by phase-locking of two longitudinal modes of laser using FPGA2017

    • Author(s)
      Toru Asaka, Masayoshi Watanabe, Shingo Saito, Masaharu Hyodo
    • Organizer
      Optics & Photonics Japan 2017
    • Related Report
      2017 Research-status Report

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

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