How to measure squeezing and entanglement of Gaussian states without homodyning.
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.
Fiurásek
Jaromír
J
QUIC, Ecole Polytechnique, CP 165, Université Libre de Bruxelles, 1050, Belgium.
Cerf
Nicolas J
NJ