Measuring the orbital angular momentum of a single photon

Leach, J., Padgett, M. J. , Barnett, S. M. , Franke-Arnold, S. and Courtial, J. (2002) Measuring the orbital angular momentum of a single photon. Physical Review Letters, 88(25), p. 257901. (doi: 10.1103/PhysRevLett.88.257901)

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We propose an interferometric method for measuring the orbital angular momentum of single photons. We demonstrate its viability by sorting four different orbital angular momentum states, and are thus able to encode two bits of information on a single photon. This new approach has implications for entanglement experiments, quantum cryptography and high density information transfer.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Courtial, Dr Johannes and Padgett, Professor Miles and Barnett, Professor Stephen and Franke-Arnold, Professor Sonja and Leach, Mr Jonathan
Authors: Leach, J., Padgett, M. J., Barnett, S. M., Franke-Arnold, S., and Courtial, J.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN (Online):1079-7114

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