Controllable diffusion of cold atoms in a harmonically driven and tilted optical lattice: Decoherence by spontaneous emission

Details Controllable diffusion of cold atoms in a harmonically driven and tilted optical lattice: Decoherence by spontaneous emission Controllable diffusion of cold atoms in a harmonically driven and tilted optical lattice: Decoherence by spontaneous emission

2006-12-11

arxiv.org/abs/cond-mat/0612261v3

J. Phys. A: Math. Theor. 41 (2008) 255001

Physics

Condensed Matter

Statistical Mechanics

16 pages, 7 figures, revised version

Scientific paper

10.1088/1751-8113/41/25/255001

We have studied some transport properties of cold atoms in an accelerated optical lattice in the presence of decohering effects due to spontaneous emission. One new feature added is the effect of an external AC drive. As a result we obtain a tunable diffusion coefficient and it's nonlinear enhancement with increasing drive amplitude. We report an interesting maximum diffusion condition.

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