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Polarization speed meter for gravitational-wave detection

Wade, Andrew R. and McKenzie, Kirk and Chen, Yanbei and Shaddock, Daniel A. and Chow, Jong H. and McClelland, David E. (2012) Polarization speed meter for gravitational-wave detection. Physical Review D, 86 (6). Art. No. 062001. ISSN 2470-0010.

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We propose a modified configuration of an advanced gravitational-wave detector that is a speed-meter-type interferometer with improved sensitivity with respect to quantum noise. With the addition of polarization-controlling components to the output of an arm cavity Michelson interferometer, an orthogonal polarization state of the interferometer can be used to store signal, returning it later with opposite phase to cancel position information below the storage bandwidth of the opposite mode. This modification provides an alternative to an external kilometer-scale Fabry-Pérot cavity, as presented in earlier work of Purdue and Chen [Phys. Rev. D 66, 122004 (2002)]. The new configuration requires significantly less physical infrastructure to achieve speed meter operation. The quantity of length and alignment degrees of freedom is also reduced. We present theoretical calculations to show that such a speed meter detector is capable of beating the strain sensitivity imposed by the standard quantum limit over a broad range of frequencies for Advanced Laser Interferometer Gravitational-wave Observatory-like parameters. The benefits and possible difficulties of implementing such a scheme are outlined. We also present results for tuning of the speed meter by adjusting the degree of polarization coupling, a novel possibility that does not exist in previously proposed designs, showing that there is a smooth transition from speed meter operation to that of a signal-recycling Michelson behavior.

Item Type:Article
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Chen, Yanbei0000-0002-9730-9463
Additional Information:© 2012 American Physical Society. Received 21 May 2012; published 5 September 2012. We thank Stanley E. Whitcomb and Rana Adhikari for advice and the LIGO Scientific Collaboration reviewers for improvements to this paper.We also gratefully acknowledge funding support from the Australian Research Council and the National Science Foundation under NSF Grant No. PHY-1068881 and CAREER Grant No. PHY-0956189.
Funding AgencyGrant Number
Australian Research Council (ARC)UNSPECIFIED
Issue or Number:6
Classification Code:PACS: 04.80.Nn, 03.67.-a, 95.55.Ym
Record Number:CaltechAUTHORS:20121015-120114637
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Official Citation:Wade, A. R., K. McKenzie, et al. (2012). "Polarization speed meter for gravitational-wave detection." Physical Review D 86(6): 062001.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34898
Deposited By: Aucoeur Ngo
Deposited On:15 Oct 2012 20:35
Last Modified:09 Mar 2020 13:18

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