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

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

doi:10.1364/OE.15.014636

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 journal › Article › peer-review

18 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 language	English
Pages (from-to)	14636-14643
Number of pages	8
Journal	Optics Express
Volume	15
Issue number	22
DOIs	https://doi.org/10.1364/OE.15.014636
Publication status	Published - 29 Oct 2007
Externally published	Yes

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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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AU - Font, Blanca G.

AU - Torres, Juan P.

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

Abstract

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