Three-Dimensional Anderson Localization of Ultracold Matter

Details Three-Dimensional Anderson Localization of Ultracold Matter Three-Dimensional Anderson Localization of Ultracold Matter

2011-05-26

arxiv.org/abs/1105.5368v2

Science 334, 66 (2011)

Physics

Condensed Matter

Quantum Gases

Scientific paper

10.1126/science.1209019

Anderson localization (AL) is a ubiquitous interference phenomenon in which waves fail to propagate in a disordered medium. We observe three-dimensional AL of noninteracting ultracold matter by allowing a spin-polarized atomic Fermi gas to expand into a disordered potential. A two-component density distribution emerges consisting of an expanding mobile component and a nondiffusing localized component. We extract a mobility edge that increases with the disorder strength, whereas the thermally averaged localization length is shown to decrease with disorder strength and increase with particle energy. These measurements provide a benchmark for more sophisticated theories of AL.

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