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arXiv · 1403.3821

Mobility edge for cold atoms in laser speckle potentials

Dominique Delande·Giuliano Orso
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Abstract

Using the transfer matrix method, we numerically compute the precise position of the mobility edge of atoms exposed to a laser speckle potential, and study its dependence vs. the disorder strength and correlation function. Our results deviate significantly from previous theoretical estimates using an approximate self-consistent approach of localization. In particular we find that the position of the mobility edge in blue-detuned speckles is much lower than in the red-detuned counterpart, pointing out the crucial role played by the asymmetric on-site distribution of speckle patterns.

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Dominique Delande, Giuliano Orso. 2015-02-17. Mobility edge for cold atoms in laser speckle potentials. https://doi.org/10.1103/physrevlett.113.060601

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