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.
- Received 24 November 2003
DOI:https://doi.org/10.1103/PhysRevLett.93.063601
©2004 American Physical Society
