Nonlocality of the Einstein-Podolsky-Rosen state in the phase space

Details Nonlocality of the Einstein-Podolsky-Rosen state in the phase space Nonlocality of the Einstein-Podolsky-Rosen state in the phase space

1999-04-19

arxiv.org/abs/quant-ph/9904071v1

Acta Phys.Slov. 49 (1999) 491-500

Physics

Quantum Physics

10 pages LaTeX, contribution to proceedings of 6th central-european workshop on quantum optics

Scientific paper

We discuss violation of Bell inequalities by the regularized Einstein-Podolsky-Rosen (EPR) state, which can be produced in a quantum optical parametric down-conversion process. We propose an experimental photodetection scheme to probe nonlocal quantum correlations exhibited by this state. Furthermore, we show that the correlation functions measured in two versions of the experiment are given directly by the Wigner function and the Q function of the EPR state. Thus, the measurement of these two quasidistribution functions yields a novel scheme for testing quantum nonlocality.

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