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

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

2005-03-25

arxiv.org/abs/quant-ph/0503204v1

Phys. Rev. A 72, 012334 (2005)

Physics

Quantum Physics

8 pages including 2 figures

Scientific paper

10.1103/PhysRevA.72.012334

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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