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

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-modu...

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Published inarXiv.org
Main Authors Wickenbrock, A, Holz, P C, Abdul Wahab, N A, Phoonthong, P, Cubero, D, Renzoni, F
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 11.12.2011
Subjects
Beams (radiation)
Cold atoms
Optical lattices
Physics - Atomic Physics
Physics - Statistical Mechanics
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1112.2341