Vibrational mechanics in an optical lattice: controlling transport via potential renormalization

Abstract

We demonstrate theoretically and experimentally the phenomenon of vibrational resonance in a periodic potential, using cold atoms in an optical lattice as a model system. A high-frequency (HF) drive, with frequency much larger than any characteristic frequency of the system, is applied by phase-modulating one of the lattice beams. We show that the HF drive leads to the renormalization of the potential. We used transport measurements as a probe of the potential renormalization. The very same experiments also demonstrate that transport can be controlled by the HF drive via potential renormalization.

Phys. Rev. Lett., in press

References in corpus (9)

• Brownian motors: noisy transport far from equilibrium
• Artificial Brownian motors: Controlling transport on the nanoscale
• Dynamical control of matter-wave tunneling in periodic potentials
• Superfluid-insulator transition in a periodically driven optical lattice
• Effects of additive noise on vibrational resonance in a bistable system
• Vibrational ratchets
• High-frequency effects in the FitzHugh-Nagumo neuron model
• Driven Ratchets for Cold Atoms
• Stochastic resonance with weak monochromatic driving: gains above unity induced by high-frequency signals

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