Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector
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.
Keywords
Cite
@article{arxiv.1307.8176,
title = {Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector},
author = {S. S. Y. Chua and S. Dwyer and L. Barsotti and D. Sigg and R. M. S. Schofield and V. V. Frolov and K. Kawabe and M. Evans and G. D. Meadors and M. Factourovich and R. Gustafson and N. Smith-Lefebvre and C. Vorvick and M. Landry and A. Khalaidovski and M. S. Stefszky and C. M. Mow-Lowry and B. C. Buchler and D. A. Shaddock and P. K. Lam and R. Schnabel and N. Mavalvala and D. E. McClelland},
journal= {arXiv preprint arXiv:1307.8176},
year = {2014}
}
Comments
13 pages, 6 figures. Submitted to Classical Quantum Gravity