Three-dimensional localization of ultracold atoms in an optical disordered potential

Details Three-dimensional localization of ultracold atoms in an optical disordered potential Three-dimensional localization of ultracold atoms in an optical disordered potential

2011-07-31

arxiv.org/abs/1108.0137v3

Physics

Condensed Matter

Other Condensed Matter

published in Nature Physics; The present version is the initial manuscript (unchanged compared to version 1); The published ve

Scientific paper

We report a study of three-dimensional (3D) localization of ultracold atoms suspended against gravity, and released in a 3D optical disordered potential with short correlation lengths in all directions. We observe density profiles composed of a steady localized part and a diffusive part. Our observations are compatible with the self-consistent theory of Anderson localization, taking into account the specific features of the experiment, and in particular the broad energy distribution of the atoms placed in the disordered potential. The localization we observe cannot be interpreted as trapping of particles with energy below the classical percolation threshold.

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