Comparison of different sloshing speedmeters

Huttner, S. H., Danilishin, S. L., Hild, S. and Strain, K. A. (2020) Comparison of different sloshing speedmeters. Classical and Quantum Gravity, 37, 085022. (doi: 10.1088/1361-6382/ab7bbb)

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Abstract

By numerical simulation, we compare the performance of four speedmeter interferometer configurations with potential application in future gravitational wave detectors. In the absence of optical loss, all four configurations can be adjusted to yield the same sensitivity in a fair comparison. Once we introduce a degree of practicality in the form of lossy optics and mode mismatch, however, the situation changes: the sloshing Sagnac and the speedmeter of Purdue and Chen have almost identical performance showing smaller degradation from the ideal than the speedmeter of Freise and the speedmeter of Miao. In a further step, we show that there is a similar hierarchy in the degree of improvement obtained through the application of 10 dB squeezing to the lossy speedmeters. In this case, the sensitivity of each speedmeter improves, but it is greatest for the sloshing Sagnac and the speedmeter of Purdue and Chen, in particular in the lower part of the target frequency range.

Item Type:Articles
Additional Information:This research was supported by the European Research Council (ERC-2012-StG: 307245).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hild, Professor Stefan and Danilishin, Dr Stefan and Huttner, Dr Sabina and Strain, Professor Kenneth
Authors: Huttner, S. H., Danilishin, S. L., Hild, S., and Strain, K. A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Classical and Quantum Gravity
Publisher:IOP Publishing
ISSN:0264-9381
ISSN (Online):1361-6382
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Classical and Quantum Gravity 37(8):)085022
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
173808Investigations in gravitational radiationSheila RowanScience and Technology Facilities Council (STFC)ST/N005422/1P&S - Physics & Astronomy