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

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.

References in corpus (5)

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• Brillouin propagation modes in optical lattices: interpretation in terms of nonconventional stochastic resonance
• Temperature and spatial diffusion of atoms cooled in a 3D lin$\perp$lin bright optical lattice
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Cited by in corpus (12)

• Particle dynamics and Stochastic Resonance in Periodic potentials
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• Stochastic Resonance for Non-Equilibrium Systems
• Using acoustic waves to induce high-frequency current oscillations in superlattices
• Cold atom realizations of Brownian motors
• Synchronization of Hamiltonian motion and dissipative effects in optical lattices: Evidence for a stochastic resonance
• Noise-induced rectification in out-of-equilibrium structures
• Resonant control of cold-atom transport through two optical lattices with a constant relative speed
• Damping rates of the atomic velocity in Sisyphus cooling
• Observation of stochastic resonance in directed propagation of cold atoms
• Controllable 3D atomic Brownian motor in optical lattices
• Dark propagation modes in optical lattices