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Proceedings Paper

Photon statistics of acousto-optic modulation
Author(s): Mateo Restrepo; Angela Maria Guzman; William T. Rhodes; Jean-Pierre Goedgebuer
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Paper Abstract

We analyze the quantum statistical properties of light scattered by an acousto-optic modulator. From the perspective of quantum mechanics, the acousto-optic effect arises from a nonlinear interaction between three bosonic fields: the laser light, the Brillouin-scattered light, and an acoustic wave. The Hamiltonian coincides with that of sum-frequency generation, where the sum-frequency mode is known to exhibit sub-Poissonian statistics. We calculate the free temporal evolution of the Fano factor for Brillouin backscattered light and determine that sub-Poissonian statistics are obtained when faint laser light is scattered by a counter-propagating coherent acoustic wave with low average phonon number. The use of sub-Poissonian light would lead to an increase of the security for quantum key distribution.

Paper Details

Date Published: 19 November 2003
PDF: 3 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.527472
Show Author Affiliations
Mateo Restrepo, Univ. Nacional de Colombia (Colombia)
Angela Maria Guzman, Univ. Nacional de Colombia (Colombia)
William T. Rhodes, Georgia Tech Lorraine (United States)
Jean-Pierre Goedgebuer, GTL-CNRS Telecom (France)

Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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