How to measure squeezing and entanglement of Gaussian states without homodyning
arXiv:quant-ph/0311119 · doi:10.1103/PhysRevLett.93.063601
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 only needs beam splitters and single-photon detectors. Two-mode entanglement can be detected from coincidences between photodetectors placed on the two beams.
4 pages, 2 figures, RevTeX