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arXiv · 1006.4772

Quantum noise in optical interferometers

Volodymyr G. Voronov·Michael Weyrauch
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Abstract

We study the photon counting noise in optical interferometers used for gravitational wave detection. In order to reduce quantum noise a squeezed vacuum is injected into the usually unused input port. It is investigated under which conditions the gravitational wave signal may be amplified without increasing counting noise concurrently. Such a possibility was suggested as a consequence of the entanglement of the two output ports of a beam splitter. We find that amplification without concurrent increase of noise is not possible for reasonable squeezing parameters. Photon distributions for various beam splitter angles and squeezing parameters are calculated.

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Volodymyr G. Voronov, Michael Weyrauch. 2010-06-24. Quantum noise in optical interferometers. https://doi.org/10.1103/physreva.81.053816

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