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Phys. Rev. A 65, 033823 (2002) [6 pages]

Two-photon entanglement of orbital angular momentum states

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Sonja Franke-Arnold and Stephen M. Barnett
Department of Physics and Applied Physics, University of Strathclyde, Glasgow G4 0NG, Scotland

Miles J. Padgett and L. Allen
Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, Scotland

Received 12 January 2001; published 26 February 2002

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.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.033823
DOI:
10.1103/PhysRevA.65.033823
PACS:
42.65.Ky, 42.50.Dv, 03.65.Ta
 
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