2002/08/01 by Michele Schiavoni, Francois-Regis Carminati, F.-R. Carminati +4 · 1 citation
Computer Science · Physics and Astronomy · #Nonlinear Dynamics and Pattern Formation #Spectroscopy and Quantum Chemical Studies #quant-ph #stochastic dynamics and bifurcation
paper · pdf · doi:10.1209/epl/i2002-00134-y
published as Europhysics Letters 59 (2002) 493-499
openalex publication_date 2002/08/01 · arxiv created 2002/12/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
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.