Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector
Date
2014
Authors
Chua, Sheon
Dwyer, Sheila
Barsotti, L
Sigg, D
Schofield, R
Frolov, V
Kawabe, Keita
Evans, M
Meadors, G.D.
Factourovich, M
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Volume Title
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Institute of Physics Publishing
Abstract
Squeezed states of light have been recently used to improve the sensitivity of laser-interferometric gravitational-wave detectors beyond the quantum limit. To completely establish quantum engineering as a realistic option for the next generation of detectors, it is crucial to study and quantify the noise coupling mechanisms which injection of squeezed states could potentially introduce. We present a direct measurement of the impact of backscattered light from a squeezed-light source deployed on one of the 4 km long detectors of the laser interferometric gravitational wave observatory (LIGO). We also show how our measurements inform the design of squeezed-light sources compatible with the even more sensitive advanced detectors currently under construction, such as Advanced LIGO.
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Classical and Quantum Gravity
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Journal article
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2037-12-31
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