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Development of frequency dependent squeezing technique for sensitivity improvement of gravitational wave detector KAGRA

Research Project

Project/Area Number 18F18024
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

Flaminio Raffaele (フラミニオ ラファエレ)  国立天文台, 重力波プロジェクト, 特別客員研究員 (10723108)

Co-Investigator(Kenkyū-buntansha) CAPOCASA ELEONORA  国立天文台, 重力波プロジェクト, 外国人特別研究員
Project Period (FY) 2018-10-12 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2020: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2019: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2018: ¥800,000 (Direct Cost: ¥800,000)
Keywordsgravitational waves / squeezing / cavity locking / wavefront sensor / Gravitational waves / Squeezing
Outline of Annual Research Achievements

This fiscal year we published a paper on Physical Review Letters on the first demonstration of frequency-dependent squeezed vacuum source for broadband quantum noise reduction in advanced gravitational-wave detectors. This result was highlighted in the magazines of APS and of OSA. All the main gravitational wave detectors in the world have now adopted this technology.
After this milestone was achieved, we improved the reliability of the experimental apparatus. In particular, we implemented a wave front sensing system in order to automatically align the filter cavity to the green beam. In addition, we prepared the implementation of a new OPO and a new Faraday isolator in order to reduce the optical losses of the experiment.
Finally, we developed a new control system for the locking of the filter cavity. This new system is based on the use of the sidebands used for the coherent control to lock the filter cavity at its operating point. First, we published a paper on Phys Rev D describing the method. Then we implemented the method and successfully we locked the filter cavity using it. This method allow locking the cavity using the coherent control sidebands i.e. a beam perfectly superposed to the squeezed vacuum beam. This was never done before.

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (25 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (9 results) Journal Article (7 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (9 results) (of which Invited: 3 results)

  • [Int'l Joint Research] CNRS/LAPP/CNRS/APC(フランス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] AEI Hannover(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Nikhef(オランダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] CNRS/APC/CNRS/LAPP(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] NIKHEF(オランダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] National Tsing Hua University(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] CNRS/APC/CNRS/LAPP(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Nikhef(オランダ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] National Tsing Hua University(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors2020

    • Author(s)
      Zhao Y.、Aritomi N.、Capocasa E.、Leonardi M.、Eisenmann M.、Guo Y.、Polini E.、Tomura A.、Arai K.、Aso Y.、Huang Y.-C.、Lee R.-K.、Lueck H.、Miyakawa O.、Prat P.、Shoda A.、Tacca M.、Takahashi R.、Vahlbruch H.、Vardaro M.、Wu C.-M.、Barsuglia M.、Flaminio R.
    • Journal Title

      Physical Review Letters

      Volume: 124 Issue: 17 Pages: 171101-171101

    • DOI

      10.1103/physrevlett.124.171101

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA2020

    • Author(s)
      Michimura Yuta et al
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 2 Pages: 1-10

    • DOI

      10.1103/physrevd.102.022008

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Control of a filter cavity with coherent control sidebands2020

    • Author(s)
      Aritomi Naoki、Leonardi Matteo、Capocasa Eleonora、Zhao Yuhang、Flaminio Raffaele
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 4 Pages: 042003-042003

    • DOI

      10.1103/physrevd.102.042003

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA2019

    • Author(s)
      Akutsu T, et al. (KAGRA Collaboration)
    • Journal Title

      Classical and Quantum Gravity

      Volume: 36 Issue: 16 Pages: 165008-165008

    • DOI

      10.1088/1361-6382/ab28a9

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA2019

    • Author(s)
      KAGRA Collaboration
    • Journal Title

      Classical and Quantum Gravity

      Volume: 36 Issue: 9 Pages: 95015-95015

    • DOI

      10.1088/1361-6382/ab0fcb

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] KAGRA: 2.5 generation interferometric gravitational wave detector2019

    • Author(s)
      KAGRA collaboration
    • Journal Title

      Nature Astronomy

      Volume: 3 Issue: 1 Pages: 35-40

    • DOI

      10.1038/s41550-018-0658-y

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] GW170817: Measurements of Neutron Star Radii and Equation of State2018

    • Author(s)
      Abbott B. P., et al.
    • Journal Title

      Physical Review Letters

      Volume: 121 Issue: 16 Pages: 161101-161101

    • DOI

      10.1103/physrevlett.121.161101

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Filter cavity locking with CCSB at TAMA2021

    • Author(s)
      Eleonora Capocasa
    • Organizer
      Virgo week
    • Related Report
      2020 Annual Research Report
  • [Presentation] Development of a frequency dependent squeezed vacuum source for broadband quantum noise reduction in advanced gravitational-wave detectors2020

    • Author(s)
      Yuhang Zhao et al.
    • Organizer
      KAGRA F2F meeting
    • Related Report
      2020 Annual Research Report
  • [Presentation] Frequency Dependent Squeezing with 300 m filter cavity in TAMA2020

    • Author(s)
      NAoki Aritomi et al.
    • Organizer
      KAGRA F2F meeting
    • Related Report
      2020 Annual Research Report
  • [Presentation] Frequency dependent squeezing experiment at NAOJ: status and future2020

    • Author(s)
      Matteo Leonardi
    • Organizer
      KAGRA International Workshop
    • Related Report
      2020 Annual Research Report
  • [Presentation] Enhancing the sensitivity of gravitational wave detectors using squeezed vacuum states of light2019

    • Author(s)
      Eleonora Capocasa
    • Organizer
      Seminar at LAPP, Annecy, France
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Quantum noise in interferometric gravitational wave detectors2019

    • Author(s)
      Eleonora Capocasa
    • Organizer
      Seminar at the Wuhan University, China
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Status of the frequency dependent squeezing experiment at TAMA2019

    • Author(s)
      Eleonora Capocasa
    • Organizer
      GWDAW 2019, Isola d'Elba, Italy
    • Related Report
      2019 Annual Research Report
  • [Presentation] The Physics of KAGRA gravitational-wave detector2019

    • Author(s)
      Eleonora Capocasa
    • Organizer
      PCCP Lecture Course
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Status of the filter cavity experiment at TAMA2019

    • Author(s)
      Eleonora Capocasa
    • Organizer
      5th KAGRA international workshop
    • Related Report
      2018 Annual Research Report

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Published: 2018-10-15   Modified: 2024-03-26  

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