Entanglement of orbital angular momentum for the signal and idler beams in parametric down-conversion

Padgett, M., Courtial, J., Allen, L., Franke-Arnold, S. and Barnett, S.M. (2002) Entanglement of orbital angular momentum for the signal and idler beams in parametric down-conversion. Journal of Modern Optics, 49(5-6), 777 -785. (doi:10.1080/09500340110108594)

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Publisher's URL: http://dx.doi.org/10.1080/09500340110108594

Abstract

We calculate the anticipated correlation between measurements of the orbital angular momentum of the signal and idler beams for parametric down-conversion. These calculations apply to the experiments where the orbital angular momentum state is measured by the use of computer-generated holograms. Displacement of these holograms with respect to the beam axis allows the measurement of superpositions of Laguerre-Gaussian modes. The correlations between such superposition modes of the signal and idler beams show their entanglement and could be used for Bell-type tests of nonlocality.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Courtial, Dr Johannes and Padgett, Professor Miles and Franke-Arnold, Dr Sonja
Authors: Padgett, M., Courtial, J., Allen, L., Franke-Arnold, S., and Barnett, S.M.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Modern Optics
ISSN:0950-0340

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