How to Measure Squeezing and Entanglement of Gaussian States without Homodyning
- 6 August 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 93 (6) , 063601
- https://doi.org/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 needs only beam splitters and single-photon detectors. Two-mode entanglement can be detected from coincidences between photodetectors placed on the two beams.Keywords
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