title: Suppression and Revival of Weak Localization through Control of Time-Reversal Symmetry.
abstract: We report on the observation of suppression and revival of coherent backscattering of ultracold atoms launched in an optical disorder in a quasi-2D geometry and submitted to a short dephasing pulse, as proposed by Micklitz, Müller, and Altland [Phys. Rev. B 91, 064203 (2015)]. This observation demonstrates a novel and general method to study weak localization by manipulating time reversal symmetry in disordered systems. In future experiments, this scheme could be extended to investigate higher order localization processes at the heart of Anderson (strong) localization.
authors.affiliation: Laboratoire Charles Fabry UMR 8501, Institut d'Optique, CNRS, Univ Paris Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau cedex, France.
authors.forename: K
authors.initials: K
authors.lastname: Müller
authors.affiliation: Laboratoire Charles Fabry UMR 8501, Institut d'Optique, CNRS, Univ Paris Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau cedex, France.
authors.forename: J
authors.initials: J
authors.lastname: Richard
authors.affiliation: Laboratoire Charles Fabry UMR 8501, Institut d'Optique, CNRS, Univ Paris Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau cedex, France.
authors.forename: V V
authors.initials: VV
authors.lastname: Volchkov
authors.affiliation: Laboratoire Charles Fabry UMR 8501, Institut d'Optique, CNRS, Univ Paris Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau cedex, France.
authors.forename: V
authors.initials: V
authors.lastname: Denechaud
authors.affiliation: LP2N UMR 5298, Univ Bordeaux 1, Institut d'Optique and CNRS, 351 cours de la Libération, 33405 Talence, France.
authors.forename: P
authors.initials: P
authors.lastname: Bouyer
authors.affiliation: Laboratoire Charles Fabry UMR 8501, Institut d'Optique, CNRS, Univ Paris Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Aspect
authors.affiliation: Laboratoire Charles Fabry UMR 8501, Institut d'Optique, CNRS, Univ Paris Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau cedex, France.
authors.forename: V
authors.initials: V
authors.lastname: Josse