Electronic noise-free measurements of squeezed light

Details Electronic noise-free measurements of squeezed light Electronic noise-free measurements of squeezed light

2008-07-09

arxiv.org/abs/0807.1446v1

Optics Letters Vol. 33, Iss. 20, pp. 2395--2397 (2008)

Physics

Quantum Physics

submitted for publication

Scientific paper

10.1364/OL.33.002395

We study the implementation of a correlation measurement technique for the characterization of squeezed light. We show that the sign of the covariance coefficient revealed from the time resolved correlation data allow us to distinguish between squeezed, coherent and thermal states. In contrast to the traditional method of characterizing squeezed light, involving measurement of the variation of the difference photocurrent, the correlation measurement method allows to eliminate the contribution of the electronic noise, which becomes a crucial issue in experiments with dim sources of squeezed light.

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