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arXiv · 1002.1547

The Nonlocal Pancharatnam Phase in Two-Photon Interferometry

Poonam Mehta·Joseph Samuel·Supurna Sinha
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Abstract

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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Poonam Mehta, Joseph Samuel, Supurna Sinha. 2010-09-03. The Nonlocal Pancharatnam Phase in Two-Photon Interferometry. https://doi.org/10.1103/physreva.82.034102

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