Elastic Scattering Time of Matter-Waves in Disordered Potentials - Groupe Gaz Quantiques Access content directly
Journal Articles Physical Review Letters Year : 2019

Elastic Scattering Time of Matter-Waves in Disordered Potentials

Abstract

We report on an extensive study of the elastic scattering time τs of matter-waves in optical disordered potentials. Using direct experimental measurements, numerical simulations and comparison with first-order Born approximation based on the knowledge of the disorder properties, we explore the behavior of τs over more than three orders of magnitude, spanning from the weak to the strong scattering regime. We study in detail the location of the crossover and, as a main result, we reveal the strong influence of the disorder statistics, especially on the relevance of the widely used Ioffe-Regel-like criterion kls ∼ 1. While it is found to be relevant for Gaussian-distributed disordered potentials, we observe significant deviations for laser speckle disorders that are commonly used with ultracold atoms. Our results are crucial for connecting experimental investigation of complex transport phenomena, such as Anderson localization, to microscopic theories.
Fichier principal
Vignette du fichier
TauS_PRL_ArXiv_1810.07574.pdf (4.35 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02356154 , version 1 (08-11-2019)

Identifiers

Cite

Jérémie Richard, Lih-King Lim, Vincent Denechaud, Valentin V. Volchkov, Baptiste Lecoutre, et al.. Elastic Scattering Time of Matter-Waves in Disordered Potentials. Physical Review Letters, 2019, 122 (10), ⟨10.1103/PhysRevLett.122.100403⟩. ⟨hal-02356154⟩
45 View
81 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More