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Frontiers in Optics

Interference of non-diffracting quantum light beams: a quantum Talbot effect

Itamar Vidal, Solange Bessa Cavalcanti, E. J. S. Fonseca, J. Miguel Hickmann

Published Jan 1, 2003• 0 citations
Publisher

Abstract

We report a quantum interference of Bessel beams by using photon pairs generated by spontaneous parametric down-conversion. The photon pairs transmitted by two double annular slits exhibit a typical classical Talbot behaviour except for the fact that the period of image reproduction is doubled, corroborating the concept of the biphoton.
DOI
10.1364/fio.2003.thll7

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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•May 6, 1996•0 citations
We study the interference patterns obtained from the superposition of two Bessel beams originated from a quantum two-photon state produced by a spontaneous parametric down-conversion process. Due to the nondiffracting character of the light beam, a self-imaging effect is found along the propagation direction for second-order interference patterns with periodicity proportional to $\ensuremath{\lambda}∕2$, characterizing a two-photon Talbot effect. Conditional interference patterns in the longitudinal plane are theoretically shown as well.
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