Optical noise correlations and beating the standard quantum limit in advanced gravitational-wave detectors

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Preprint

6 July 2001

preprint
Published by arXiv in arXiv

DOI:10.48550/arXiv.gr-qc/0010011

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.

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All Related Versions

Version 1, 2000-10-04, ArXiv
Version 2, 2001-07-06, ArXiv
Published version: Classical and Quantum Gravity, 18 (15), L95.

This publication has 1 reference indexed in Scilit:

Quantum noise in second generation, signal-recycled laser interferometric gravitational-wave detectors
Physical Review D, 2001