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Measurement of Spectral Functions of Ultracold Atoms in Disordered Potentials

Valentin V. Volchkov, Michael Pasek, Vincent Denechaud, Musawwadah Mukhtar, Alain Aspect, Dominique Delande, and Vincent Josse
Phys. Rev. Lett. 120, 060404 – Published 8 February 2018
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Abstract

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 controlled transfer of atoms to create well-defined energy states. This opens new avenues for experimental investigations of three-dimensional Anderson localization.

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  • Received 27 July 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.060404

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Valentin V. Volchkov1,2, Michael Pasek1,3,†, Vincent Denechaud1,4, Musawwadah Mukhtar1, Alain Aspect1, Dominique Delande3, and Vincent Josse1,*

  • 1Laboratoire Charles Fabry, Institut d’Optique, CNRS, Université Paris-Saclay, 91127 Palaiseau cedex, France
  • 2Max-Planck-Institute for Intelligent Systems, Max-Planck-Ring 4, 72076 Tübingen, Germany
  • 3Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 Place Jussieu, 75005 Paris, France
  • 4SAFRAN Sensing Solutions, Safran Tech, Rue des Jeunes Bois, Châteaufort CS 80112, 78772 Magny-les-Hameaux, France

  • *Corresponding author. vincent.josse@institutoptique.fr
  • Present address: Collège de France, 11 place Marcelin Berthelot, 75005 Paris, France.

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Issue

Vol. 120, Iss. 6 — 9 February 2018

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