Phys. Rev. A 78, 025803 (2008) [4 pages]Entanglement criteria and classical correlations in parametric amplifiersReceived 1 October 2007; revised 24 March 2008; published 12 August 2008 We study classical noise correlations between the two down-converted fields in optical parametric amplification. In particular, it is shown that the classical correlations between the conjugate quadratures of the amplified fields can violate correlation criteria which are classical analogs of those used to characterize continuous-variable entanglement. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.78.025803
DOI:
10.1103/PhysRevA.78.025803
PACS:
42.65.Lm, 03.65.Ud, 03.67.Mn
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