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

Deuar, P., Jaskula, J.-C., Bonneau, M., Krachmalnicoff, V., Boiron, D., Westbrook, C. I. and Kheruntsyan, K. V. (2014) Anisotropy in s-wave Bose-Einstein condensate collisions and its relationship to superradiance. Physical Review A - Atomic, Molecular, and Optical Physics, 90 3: 033613-1-033613-12. doi:10.1103/PhysRevA.90.033613

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Author Deuar, P.
Jaskula, J.-C.
Bonneau, M.
Krachmalnicoff, V.
Boiron, D.
Westbrook, C. I.
Kheruntsyan, K. V.
Title Anisotropy in s-wave Bose-Einstein condensate collisions and its relationship to superradiance
Formatted title
Anisotropy in s-wave Bose-Einstein condensate collisions and its relationship to superradiance
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1094-1622
1050-2947
Publication date 2014-09-12
Year available 2014
Sub-type Article (original research)
DOI 10.1103/PhysRevA.90.033613
Open Access Status File (Publisher version)
Volume 90
Issue 3
Start page 033613-1
End page 033613-12
Total pages 12
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2015
Language eng
Formatted abstract
We report the experimental realization of a single-species atomic four-wave mixing process with Bose-Einstein-condensate 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. There are two competing anisotropic processes: classical trajectory deflections due to the mean-field potential and Bose-enhanced scattering which bears similarity to superradiance. We analyze the relative importance of these processes in the dynamical buildup of the anisotropic density distribution of scattered atoms and compare the Bose enhancement effects to those in optically pumped superradiance.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2015 Collection
 
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