Anisotropy in s-wave Bose-Einstein condensate collisions and its relationship to superradiance

Abstract : We report the experimental realization of a single-species atomic four-wave mixing process with BEC collisions for which the angular distribution of scattered atom pairs is not isotropic, despite the collisions being in the s-wave regime. Theoretical analysis indicates that this anomalous behavior can be explained by the anisotropic nature of the gain in the medium when the source clouds are not cylindrically symmetric around the collision axis. There are two competing anisotropic processes: classical trajectory deflections due to the mean-field potential, and Bose enhanced scattering. The bosonic enhancement process bears similarity to superradiance, although a consideration of the differences explains why it is more difficult to achieve strongly dominant end-fire modes with atom optics.
Type de document :
Article dans une revue
Physical Review A, American Physical Society, 2014, 90, pp.033613. 〈10.1103/PhysRevA.90.033613〉
Liste complète des métadonnées

Littérature citée [55 références]  Voir  Masquer  Télécharger

https://hal-iogs.archives-ouvertes.fr/hal-01016111
Contributeur : Christoph I Westbrook <>
Soumis le : lundi 16 novembre 2015 - 13:55:06
Dernière modification le : mardi 30 janvier 2018 - 14:52:11
Document(s) archivé(s) le : vendredi 28 avril 2017 - 07:18:11

Fichier

01016111.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Piotr Deuar, Jean-Christophe Jaskula, Marie Bonneau, Valentina Krachmalnicoff, Denis Boiron, et al.. Anisotropy in s-wave Bose-Einstein condensate collisions and its relationship to superradiance. Physical Review A, American Physical Society, 2014, 90, pp.033613. 〈10.1103/PhysRevA.90.033613〉. 〈hal-01016111〉

Partager

Métriques

Consultations de la notice

312

Téléchargements de fichiers

57