The Nonlocal Pancharatnam Phase in Two-Photon Interferometry

Details The Nonlocal Pancharatnam Phase in Two-Photon Interferometry The Nonlocal Pancharatnam Phase in Two-Photon Interferometry

2010-02-08

arxiv.org/abs/1002.1547v3

Phys. Rev. A 82, 034102 (2010)

Physics

Quantum Physics

v3: final version to appear in Phys. Rev. A (Brief Reports)

Scientific paper

10.1103/PhysRevA.82.034102

We propose a polarised intensity interferometry experiment, which measures the nonlocal Pancharatnam phase acquired by a pair of Hanbury Brown-Twiss photons. The setup involves two polarised thermal sources illuminating two polarised detectors. Varying the relative polarisation angle of the detectors introduces a two photon geometric phase. Local measurements at either detector do not reveal the effects of the phase, which is an optical analog of the multiparticle Aharonov-Bohm effect. The geometric phase sheds light on the three slit experiment and suggests ways of tuning entanglement.

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