Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector

Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector

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...

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Bibliographic Details
Main Authors: Chua, S. S. Y., Sigg, D., Schofield, R. M. S., Frolov, V. V., Kawabe, K., Meadors, G. D., Factourovich, M., Gustafson, R., Vorvick, C., Landry, M., Khalaidovski, A., Stefszky, M. S., Mow-Lowry, Conor Malcolm, Buchler, B. C., Shaddock, D. A., Lam, P. K., Schnabel, R., McClelland, David E., Barsotti, Lisa, Evans, M., Mavalvala, Nergis, Dwyer, Sheila Elizabeth, Smith, Nicolas de Mateo
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: IOP Publishing 2014
Online Access:http://hdl.handle.net/1721.1/88522
https://orcid.org/0000-0003-0219-9706
Description
Summary: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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