Optical noise correlations and beating the standard quantum limit in advanced gravitational-wave detectors
General Relativity and Quantum Cosmology
2010-04-06 v2 Quantum Physics
Abstract
The uncertainty principle, applied naively to the test masses of a laser-interferometer gravitational-wave detector, produces a Standard Quantum Limit (SQL) on the interferometer's sensitivity. It has long been thought that beating this SQL would require a radical redesign of interferometers. However, we show that LIGO-II interferometers, currently planned for 2006, can beat the SQL by as much as a factor two over a bandwidth \Delta f \sim f, if their thermal noise can be pushed low enough. This is due to dynamical correlations between photon shot noise and radiation-pressure noise, produced by the LIGO-II signal-recycling mirror.
Cite
@article{arxiv.gr-qc/0010011,
title = {Optical noise correlations and beating the standard quantum limit in advanced gravitational-wave detectors},
author = {Alessandra Buonanno and Yanbei Chen},
journal= {arXiv preprint arXiv:gr-qc/0010011},
year = {2010}
}
Comments
12 pages, 2 figures; minor changes, some references added