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Stochastic resonance in periodic potentials: realization in a dissipative optical lattice

Michele Schiavoni·Francois-Regis Carminati·Laurent Sanchez-Palencia·Ferruccio Renzoni·Gilbert Grynberg
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Abstract

We have observed the phenomenon of stochastic resonance on the Brillouin propagation modes of a dissipative optical lattice. Such a mode has been excited by applying a moving potential modulation with phase velocity equal to the velocity of the mode. Its amplitude has been characterized by the center-of-mass (CM) velocity of the atomic cloud. At Brillouin resonance, we studied the CM-velocity as a function of the optical pumping rate at a given depth of the potential wells. We have observed a resonant dependence of the CM velocity on the optical pumping rate, corresponding to the noise strength. This corresponds to the experimental observation of stochastic resonance in a periodic potential in the low-damping regime.

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Michele Schiavoni, Francois-Regis Carminati, Laurent Sanchez-Palencia, Ferruccio Renzoni, Gilbert Grynberg. 2002-12-30. Stochastic resonance in periodic potentials: realization in a dissipative optical lattice. https://doi.org/10.1209/epl/i2002-00134-y

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