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arXiv · 1112.2341

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

A. Wickenbrock·P. C. Holz·N. A. Abdul Wahab·P. Phoonthong·D. Cubero·F. Renzoni
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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.

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A. Wickenbrock, P. C. Holz, N. A. Abdul Wahab, P. Phoonthong, D. Cubero, F. Renzoni. 2011-12-11. Vibrational mechanics in an optical lattice: controlling transport via potential renormalization. https://doi.org/10.1103/physrevlett.108.020603

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