Orbital angular momentum correlations of entangled paired photons

The generation of paired photons entangled in the spatial degree of freedom, i.e., in orbital angular momentum, offers a convenient physical resource to investigate the nature of entanglement in a multidimensional Hilbert space with controllable dimensionality. The two main physical processes that g...

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Published in:Journal of optics (2010) 2009-09, Vol.11 (9), p.094013-094013 (7)
Main Authors: Osorio, Clara I, Molina-Terriza, G, Torres, Juan P
Format: Article
Language:English
Subjects:
Angular momentum
Correlation
Degrees of freedom
Emittance
Mathematical analysis
Orbitals
Photons
Stability
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description The generation of paired photons entangled in the spatial degree of freedom, i.e., in orbital angular momentum, offers a convenient physical resource to investigate the nature of entanglement in a multidimensional Hilbert space with controllable dimensionality. The two main physical processes that generate pairs of photons which show correlations in orbital angular momentum are (a) spontaneous parametric down-conversion (SPDC), and (b) Raman transitions induced in atomic ensembles. One question naturally arises: what kinds of correlations exist between the orbital angular momentum of the generated photons? The answer might be different if we consider the whole quantum state of the generated photons, i.e., all possible directions where the pairs of photons can be emitted, or if we consider only a small section of the full set of directions.
doi_str_mv 10.1088/1464-4258/11/9/094013
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source Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
subjects Angular momentum
Correlation
Degrees of freedom
Emittance
Mathematical analysis
Orbitals
Photons
Stability
title Orbital angular momentum correlations of entangled paired photons
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