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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14636–14643

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

Clara I. Osorio, Gabriel Molina-Terriza, Blanca G. Font, and Juan P. Torres  »View Author Affiliations

Optics Express, Vol. 15, Issue 22, pp. 14636-14643 (2007)

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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.

© 2007 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.0270) Quantum optics : Quantum optics
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Nonlinear Optics

Original Manuscript: September 17, 2007
Revised Manuscript: October 12, 2007
Manuscript Accepted: October 12, 2007
Published: October 22, 2007

Clara I. Osorio, Gabriel Molina-Terriza, Blanca G. Font, and Juan P. Torres, "Azimuthal distinguishability of entangled photons generated in spontaneous parametric down-conversion," Opt. Express 15, 14636-14643 (2007)

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