Quantum noise in optical interferometers

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053816· OSTI ID:21408903

Voronov, Volodymyr G; Weyrauch, Michael ^[1]

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1. Faculty of Physics, Taras Shevchenko National University of Kyiv, 03022 Kyiv (Ukraine)

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.

• OSTI ID: 21408903
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.053816; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMPLIFICATION
BEAM SPLITTING
DETECTION
DISTRIBUTION
GRAVITATIONAL WAVES
INTERFEROMETERS
NOISE
PHOTONS
QUANTUM ENTANGLEMENT
BOSONS
ELEMENTARY PARTICLES
MASSLESS PARTICLES
MEASURING INSTRUMENTS