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Optical noise correlations and beating the standard quantum limit in advanced gravitational-wave detectors

Buonanno, Alessandra and Chen, Yanbei (2001) Optical noise correlations and beating the standard quantum limit in advanced gravitational-wave detectors. Classical and Quantum Gravity, 18 (15). L95-L101. ISSN 0264-9381. doi:10.1088/0264-9381/18/15/102.

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The uncertainty principle, applied naively to the test masses of a laser-interferometer gravitational-wave detector, produces a standard quantum limit (SQL) on the interferometer's sensitivity. It has long been thought that beating this SQL would require a radical redesign of interferometers. However, we show that LIGO-II interferometers, currently planned for 2006, can beat the SQL by as much as a factor two over a bandwidth Deltaf similar to f, if their thermal noise can be pushed low enough. This is due to dynamical correlations between photon shot noise and radiation-pressure noise, produced by the LIGO-II signal-recycling mirror.

Item Type:Article
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Chen, Yanbei0000-0002-9730-9463
Additional Information:© 2001 IOP Publishing Ltd. Received 29 May 2001. Published 18 July 2001. The authors thank K S Thorne for having introduced us to QND theory, for his constant encouragement and for very fruitful discussions and comments, and V B Braginsky, F Ya Khalili, Y Levin and K A Strain for very helpful discussions and comments. This research was supported in part by NSF grant PHY-9900776 and for AB also by the Richard C Tolman Fellowship.
Funding AgencyGrant Number
Richard C. Tolman fellowshipUNSPECIFIED
Subject Keywords:PACS: 04.80.Nn Gravitational wave detectors and experiments, 07.60.Ly Interferometers, 05.40.Ca Noise. MCS: 83C35 Gravitational waves. Instrumentation and measurement ; Gravitation and cosmology ;Statistical physics and nonlinear systems
Issue or Number:15
Record Number:CaltechAUTHORS:20140911-111234690
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49591
Deposited By: Katherine Johnson
Deposited On:11 Sep 2014 18:31
Last Modified:10 Nov 2021 18:46

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