Quantum transport of atomic matterwaves in anisotropic 2D and 3D disorder - Institut d'Optique Graduate School Accéder directement au contenu
Article Dans Une Revue New Journal of Physics Année : 2013

Quantum transport of atomic matterwaves in anisotropic 2D and 3D disorder

Résumé

The macroscopic transport properties in a disordered potential, namely diffusion and weak/strong localization, closely depend on the microscopic and statistical properties of the disorder itself. This dependence is rich of counter-intuitive consequences. It can be particularly exploited in matter wave experiments, where the disordered potential can be tailored and controlled, and anisotropies are naturally present. In this work, we apply a perturbative microscopic transport theory and the self-consistent theory of Anderson localization to study the transport properties of ultracold atoms in anisotropic 2D and 3D speckle potentials. In particular, we discuss the anisotropy of single-scattering, diffusion and localization. We also calculate a disorder-induced shift of the energy states and propose a method to include it, which amounts to renormalize energies in the standard on-shell approximation. We show that the renormalization of energies strongly affects the prediction for the 3D localization threshold (mobility edge). We illustrate the theoretical findings with examples which are revelant for current matter wave experiments, where the disorder is created with a laser speckle. This paper provides a guideline for future experiments aiming at the precise location of the 3D mobility edge and study of anisotropic diffusion and localization effects in 2D and 3D.
Fichier principal
Vignette du fichier
PaperV3.pdf (1.31 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00756831 , version 1 (25-11-2012)
hal-00756831 , version 2 (20-06-2013)

Identifiants

Citer

Marie Piraud, Luca Pezzé, Laurent Sanchez-Palencia. Quantum transport of atomic matterwaves in anisotropic 2D and 3D disorder. New Journal of Physics, 2013, 15, pp.075007. ⟨10.1088/1367-2630/15/7/075007⟩. ⟨hal-00756831v2⟩
288 Consultations
277 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More