Oelker, E., Mansell, G., Tse, M., Miller, J., Matichard, F., Barsotti, L., Fritschel, P., McClelland, D. E., Evans, M. and Mavalvala, N. (2016) Ultra-low phase noise squeezed vacuum source for gravitational wave detectors. Optica, 3(7), pp. 682-685. (doi: 10.1364/OPTICA.3.000682)
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Abstract
Squeezed states of light are a valuable resource for reducing quantum noise in precision measurements. Injection of squeezed vacuum states has emerged as an important technique for reducing quantum shot noise, which is a fundamental limitation to the sensitivity of interferometric gravitational wave detectors. Realizing the most benefit from squeezed-state injection requires lowering optical losses and also minimizing squeezed quadrature fluctuations—or phase noise—to ensure that the large noise in the anti-squeezed quadrature does not contaminate the measurement quadrature. Here, we present an audio band squeezed vacuum source with 1.3+0.7−0.5 mrad of phase noise. This is a nearly tenfold improvement over previously reported measurements, improving prospects for squeezing enhancements in current and future gravitational wave detectors.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Oelker, Dr Eric |
Authors: | Oelker, E., Mansell, G., Tse, M., Miller, J., Matichard, F., Barsotti, L., Fritschel, P., McClelland, D. E., Evans, M., and Mavalvala, N. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Optica |
Publisher: | Optical Society of America |
ISSN: | 2334-2536 |
ISSN (Online): | 2334-2536 |
Published Online: | 23 June 2016 |
Copyright Holders: | Copyright © 2016 Optical Society of America |
First Published: | First published in Optica 3(7): 682-685 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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