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 a frequency much larger than any characteristic frequency of the system, is applied by phase mo...

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Bibliographic Details
Published in:Physical review letters 2012-01, Vol.108 (2), p.020603-020603, Article 020603
Main Authors: Wickenbrock, A, Holz, P C, Wahab, N A Abdul, Phoonthong, P, Cubero, D, Renzoni, F
Format: Article
Language:English
Subjects:
Biological Transport
Light
Models, Theoretical
Optical Phenomena
Vibration
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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 a 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:0031-9007
1079-7114
DOI:10.1103/physrevlett.108.020603