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Physical Review A

Two-photon entanglement of orbital angular momentum states

Sonja Franke‐Arnold, Stephen Mark Barnett, Miles J. Padgett, L. Allen

Published Feb 26, 2002• 235 citations
Publisher

Abstract

We investigate the orbital angular momentum correlation of a photon pair created in a spontaneous parametric down-conversion process. We show how the conservation of the orbital angular momentum in this process results from phase matching in the nonlinear crystal.
DOI
10.1103/physreva.65.033823

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