Squeezing and Dual Recycling in Laser Interferometric Gravitational Wave Detectors

Details Squeezing and Dual Recycling in Laser Interferometric Gravitational Wave Detectors Squeezing and Dual Recycling in Laser Interferometric Gravitational Wave Detectors

1994-01-25

arxiv.org/abs/gr-qc/9401031v1

Phys.Lett. A190 (1994) 22; Erratum-ibid. A196 (1995) 377

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Plain tex, 11 pages, 1 figure available on request from biplab@iucaa.ernet.in

Scientific paper

10.1016/0375-9601(94)90360-3

We calculate the response of an ideal Michelson interferometer incorporating both dual recycling and squeezed light to gravitational waves. The photon counting noise has contributions from the light which is sent in through the input ports as well as the vacuum modes at sideband frequencies generated by the gravitational waves. The minimum detectable gravity wave amplitude depends on the frequency of the wave as well as the squeezing and recycling parameters. Both squeezing and the broadband operation of dual recycling reduce the photon counting noise and hence the two techniques can be used together to make more accurate phase measurements. The variance of photon number is found to be time-dependent, oscillating at the gravity wave frequency but of much lower order than the constant part.

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