3rd generation laser interferometric gravitational wave detector using squeezed light

2010 Fiscal Year Final Research Report

• Project/Area Number: 20200046
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research a proposed research project)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics; Applied optics/Quantum optical engineering
• Research Institution: The University of Tokyo
• Principal Investigator: TSUBONO Kimio 東京大学, 大学院・理学系研究科, 教授 (10125271)
• Project Period (FY): 2008 – 2010
• Keywords: 重力波 / スクイーズド光 / レーザー干渉計 / 量子光学 / 宇宙物理

Research Abstract

Applying 2nd order nonlinear effect produced by the nonlinear optical crystal, we have achieved in the generation of the 8-dB squeezed vacuum. Injecting the squeezed vacuum into the dark port of the interferometer, we could reduce the shot-noise level by 2dB. This is the first practical demonstration of the shot-noise reduction in the gravitational-wave detector using squeezed light.

Research Products

• [Journal Article] First Observational Upper Limit on Gravitational Wave Backgrounds at 0.2 Hz with a Torsion-Bar Antenna (2011)
  • Author(s): Koji Ishidoshiro, Masaki Ando, Akiteru Takamori, Hirotaka Takahashi, Kenshi Okada, Nobuyuki Matsumoto, Wataru Kokuyama, Nobuyuki Kanda, Yoichi Aso, and Kimio Tsubono
  • Journal Title: Phys. Rev. Lett. Volume: 106 Pages: 161101
• [Journal Article] Torsion-Bar Antenna for Low-Frequency Gravitational-Wave Observations (2010)
  • Author(s): Masaki Ando, Koji Ishidoshiro, Kazuhiro Yamamoto, Kent Yagi, Wataru Kokuyama, Kimio Tsubono, and Akiteru Takamori
  • Journal Title: Phys. Rev. Lett. Volume: 105 Pages: 161101
• [Presentation] 力波検出器の感度向上に向けたスクイーズド光の生成実験 VI (2012)
  • Author(s): 松本伸之、高橋走、麻生洋一、坪野公夫、政田元太、古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 三宮
  • Year and Date: 20120300
• [Presentation] 重力波検出器の感度向上に向けたスクイーズド光の生成実験 V (2011)
  • Author(s): 松本伸之、高橋走、麻生洋一、坪野公夫、政田元太、古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 青森
  • Year and Date: 20110900
• [Presentation] The production of a squeezed state for LCGT (2011)
  • Author(s): Nobuyuki Matsumoto, Kakeru Takahashi, Yoichi Aso, Kimio Tsubono, Genta Masada, Akira Furusawa
  • Organizer: Amaldi9
  • Place of Presentation: Wales
  • Year and Date: 20110700
• [Presentation] 重力波検出器の感度向上に向けたスクイーズド光の生成実験 IV (2011)
  • Author(s): 松本伸之、高橋走、麻生洋一、坪野公夫、政田元太、古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟
  • Year and Date: 20110300
• [Presentation] 重力波検出器の感度向上に向けたスクイーズド光の生成実験 III (2010)
  • Author(s): 松本伸之、高橋走、麻生洋一、坪野公夫、政田元太、古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 北九州
  • Year and Date: 20100900
• [Presentation] 量子光学的手法を用いた重力波検出器の感度向上実験 II (2010)
  • Author(s): 高橋走, 松本伸之, 麻生洋一, 坪野公夫, 政田元太, 古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山
  • Year and Date: 20100300
• [Presentation] 重力波検出器の感度向上に向けたスクイーズド光の生成実験 II (2010)
  • Author(s): 松本伸之、高橋走、麻生洋一、坪野公夫、政田元太、古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山
  • Year and Date: 20100300
• [Presentation] 量子光学的手法を用いた重力波検出器の感度向上実験 I (2009)
  • Author(s): 高橋走, 松本伸之, 麻生洋一, 坪野公夫, 政田元太, 古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 兵庫
  • Year and Date: 20090900
• [Presentation] 重力波検出器の感度向上に向けたスクイーズド光の生成実験 I (2009)
  • Author(s): 松本伸之、高橋走、麻生洋一、坪野公夫、政田元太、古澤明
  • Organizer: 日本物理学会
  • Place of Presentation: 兵庫
  • Year and Date: 20090900
• [Remarks]
  • URL: https://granite.phys.s.u-tokyo.ac.jp/wiki/Lab/index.php/SqueezingExp