Sub shot noise phase quadrature measurement of intense light beams

Details Sub shot noise phase quadrature measurement of intense light beams Sub shot noise phase quadrature measurement of intense light beams

2004-06-14

arxiv.org/abs/quant-ph/0406087v1

Optics Letters, 29, 1936 (2004)

Physics

Quantum Physics

9 pages, 2 figures, accepted for publication in Optics Letters

Scientific paper

10.1364/OL.29.001936

We present a setup to perform sub shot noise measurements of the phase quadrature for intense pulsed light without the use of a separate local oscillator. A Mach--Zehnder interferometer with an unbalanced arm length is used to detect the fluctuations of the phase quadrature at a single side band frequency. Using this setup, the non--separability of a pair of quadrature entangled beams is demonstrated experimentally.

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