Speed Meter As a Quantum Nondemolition Measuring Device for Force

Details Speed Meter As a Quantum Nondemolition Measuring Device for Force Speed Meter As a Quantum Nondemolition Measuring Device for Force

1996-03-26

arxiv.org/abs/gr-qc/9603046v1

Phys.Rev. D54 (1996) 4735-4737

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages of RevTex, 1 postscript figure

Scientific paper

10.1103/PhysRevD.54.4735

Quantum noise is an important issue for advanced LIGO. Although it is in principle possible to beat the Standard Quantum Limit (SQL), no practical recipe has been found yet. This paper dicusses quantum noise in the context of speedmeter-a devise monitoring the speed of the testmass. The scheme proposed to overcome SQL in this case might be more practical than the methods based on monitoring position of the testmass.

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