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Experimental investigation of criteria for continous variable entanglement

Bowen, Warwick P; Schnabel, R; Lam, Ping Koy; Ralph, Timothy Cameron


We generate a pair of entangled beams from the interference of two amplitude squeezed beams. The entanglement is quantified in terms of EPR paradox and inseparability criteria, with both results clearly beating the standard quantum limit. We experimentally analyze the effect of decoherence on each criterion and demonstrate qualitative differences. We also characterize the number of required and excess photons present in the entangled beams and provide contour plots of the efficacy of quantum...[Show more]

CollectionsANU Research Publications
Date published: 2003-01-29
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.90.043601


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