Phys. Rev. A 72, 012334 (2005) [7 pages]Entangling ability of a beam splitter in the presence of temporal which-path informationReceived 25 March 2005; published 26 July 2005 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–Clauser-Horne-Shimony-Holt (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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.012334
DOI:
10.1103/PhysRevA.72.012334
PACS:
03.67.Mn, 03.65.Ud, 42.50.Dv
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