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Entangling ability of a beam splitter in the presence of temporal which-path information

J. L. van Velsen
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Abstract

We calculate the amount of polarization-entanglement induced by two-photon interference at a lossless beam splitter. Entanglement and its witness are quantified respectively by concurrence and the Bell-CHSH parameter. In the presence of a Mandel dip, the interplay of two kinds of which-path information -- temporal and polarization -- gives rise to the existence of entangled polarization-states that cannot violate the Bell-CHSH inequality.

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J. L. van Velsen. 2005-03-25. Entangling ability of a beam splitter in the presence of temporal which-path information. https://doi.org/10.1103/physreva.72.012334

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