How to measure squeezing and entanglement of Gaussian states without homodyning |
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Authors: | Fiurásek Jaromír Cerf Nicolas J |
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Affiliation: | QUIC, Ecole Polytechnique, CP 165, Université Libre de Bruxelles, 1050, Belgium. |
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Abstract: | 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 needs only 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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