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Title: Non-local geometric phase in two-photon interferometry
Authors: Martin, A.
Alibart, O.
Flesch, J.C.
Samuel, J.
Sinha, Supurna
Tanzilli, S.
Kastberg, Anders
Issue Date: Jan-2012
Publisher: EPL Association
Citation: Europhysics Letters, 2012, Vol.97, p.10003
Abstract: We report the experimental observation of the non-local geometric phase in Hanbury Brown-Twiss polarized intensity interferometry. The experiment involves two independent, polarized, incoherent sources, illuminating two polarized detectors. Varying the relative polarization angle between the detectors introduces a geometric phase equal to half the solid angle on the PoincarĂ© sphere traced out by a pair of single photons. Local measurements at either detector do not reveal the effect of the geometric phase, which appears only in the coincidence counts between the two detectors, showing a genuinely non-local effect. We show experimentally that coincidence rates of photon arrival times at separated detectors can be controlled by the two-photon geometric phase. This effect can be used for manipulating and controlling photonic entanglement.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 0295-5075
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Copyright: 2012, EPLA
Appears in Collections:Research Papers (TP)

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