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

Clara I. Osorio*, Gabriel Molina-Terriza, Blanca G. Font, Juan P. Torres

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)14636-14643
Number of pages8
JournalOptics Express
Volume15
Issue number22
DOIs
Publication statusPublished - 29 Oct 2007
Externally publishedYes

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