How to measure squeezing and entanglement of Gaussian states without homodyning

Details How to measure squeezing and entanglement of Gaussian states without homodyning How to measure squeezing and entanglement of Gaussian states without homodyning

2003-11-18

arxiv.org/abs/quant-ph/0311119v1

Phys. Rev. Lett. 93, 063601 (2004).

Physics

Quantum Physics

4 pages, 2 figures, RevTeX

Scientific paper

10.1103/PhysRevLett.93.063601

We propose a scheme for measuring the squeezing, purity, and entanglement of
Gaussian states of light that does not require homodyne detection. The
suggested setup only needs beam splitters and single-photon detectors. Two-mode
entanglement can be detected from coincidences between photodetectors placed on
the two beams.

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