# Measurement of Spectral Functions of Ultracold Atoms in Disordered Potentials.

@article{Volchkov2018MeasurementOS,
title={Measurement of Spectral Functions of Ultracold Atoms in Disordered Potentials.},
author={V. Volchkov and M. P{\'a}sek and V. Denechaud and M. Mukhtar and A. Aspect and D. Delande and V. Josse},
journal={Physical review letters},
year={2018},
volume={120 6},
pages={
060404
}
}
We report on the measurement of the spectral functions of noninteracting ultracold atoms in a three-dimensional disordered potential resulting from an optical speckle field. Varying the disorder strength by 2 orders of magnitude, we observe the crossover from the "quantum" perturbative regime of low disorder to the "classical" regime at higher disorder strength, and find an excellent agreement with numerical simulations. The method relies on the use of state-dependent disorder and the… Expand
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