期刊
CLASSICAL AND QUANTUM GRAVITY
卷 31, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/31/3/035017
关键词
squeezed states; gravitational wave detectors; scattered light
类别
资金
- National Science Foundation [PHY-0757058]
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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