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

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

2011-12-11

arxiv.org/abs/1112.2341v1

Physics

Condensed Matter

Statistical Mechanics

Phys. Rev. Lett., in press

Scientific paper

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.

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