Three-Dimensional Anderson Localization in Variable Scale Disorder
Abstract
We report on the impact of variable-scale disorder on 3D Anderson localization of a non-interacting ultracold atomic gas. A spin-polarized gas of fermionic atoms is localized by allowing it to expand in an optical speckle potential. Using a sudden quench of the localized density distribution, we verify that the density profile is representative of the underlying single-particle localized states. The geometric mean of the disordering potential correlation lengths is varied by a factor of four via adjusting the aperture of the speckle focusing lens. We observe that the root-mean-square size of the localized gas increases approximately linearly with the speckle correlation length, in qualitative agreement with the scaling predicted by weak scattering theory.
Cite
@article{arxiv.1307.7175,
title = {Three-Dimensional Anderson Localization in Variable Scale Disorder},
author = {W. R. McGehee and S. S. Kondov and W. Xu and J. J. Zirbel and B. DeMarco},
journal= {arXiv preprint arXiv:1307.7175},
year = {2015}
}
Comments
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