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Witnessing Entanglement of EPR States With Second-Order Interference

Magdalena Stobińska·Krzysztof Wódkiewicz
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Abstract

The separability of the continuous-variable EPR state can be tested with Hanbury-Brown and Twiss type interference. The second-order visibility of such interference can provide an experimental test of entanglement. It is shown that time-resolved interference leads to the Hong, Ou and Mandel deep, that provides a signature of quantum non-separability for pure and mixed EPR states. A Hanbury-Brown and Twiss type witness operator can be constructed to test the quantum nature of the EPR entanglement.

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Magdalena Stobińska, Krzysztof Wódkiewicz. 2006-08-31. Witnessing Entanglement of EPR States With Second-Order Interference. https://doi.org/10.1142/s021797920603408x

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