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arXiv · 0709.3437

Azimuthal distinguishability of entangled photons generated in spontaneous parametric down-conversion

Clara I. Osorio·Gabriel Molina-Terriza·Blanca G. Font·Juan P. Torres
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Abstract

We experimentally demonstrate that paired photons generated in different sections of a down-conversion cone, when some of the interacting waves show Poynting vector walk-off, carry different spatial correlations, and therefore a different degree of spatial entanglement. This is shown to be in agreement with theoretical results. We also discuss how this azimuthal distinguishing information of the down-conversion cone is relevant for the implementation of quantum sources aimed at the generation of entanglement in other degrees of freedom, such as polarization.

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Clara I. Osorio, Gabriel Molina-Terriza, Blanca G. Font, Juan P. Torres. 2007-09-21. Azimuthal distinguishability of entangled photons generated in spontaneous parametric down-conversion. https://doi.org/10.1364/oe.15.014636

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