Fiurásek Jaromír, Cerf Nicolas J
QUIC, Ecole Polytechnique, CP 165, Université Libre de Bruxelles, 1050, Belgium.
Phys Rev Lett. 2004 Aug 6;93(6):063601. doi: 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 needs only beam splitters and single-photon detectors. Two-mode entanglement can be detected from coincidences between photodetectors placed on the two beams.
我们提出了一种用于测量光的高斯态的压缩、纯度和纠缠的方案，该方案不需要零差检测。所建议的装置仅需要分束器和单光子探测器。双模纠缠可以通过放置在两束光上的光电探测器之间的符合计数来检测。
