Article (Scientific journals)
Coherent backscattering of Bose-Einstein condensates in two-dimensional disorder potentials
Hartung, Michael; Wellens, Thomas; Mueller, Cord A et al.
2008In Physical Review Letters, 101 (2), p. 020603
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Abstract :
[en] We study quantum transport of an interacting Bose-Einstein condensate in a two-dimensional disorder potential. In the limit of a vanishing atom-atom interaction, a sharp cone in the angle-resolved density of the scattered matter wave is observed, arising from constructive interference between amplitudes propagating along reversed scattering paths. Weak interaction transforms this coherent backscattering peak into a pronounced dip, indicating destructive instead of constructive interference. We reproduce this result, obtained from the numerical integration of the Gross-Pitaevskii equation, by a diagrammatic theory of weak localization in the presence of nonlinearity.
Disciplines :
Physics
Author, co-author :
Hartung, Michael
Wellens, Thomas
Mueller, Cord A
Richter, Klaus
Schlagheck, Peter ;  Université de Liège - ULiège > Département de physique > Physique quantique statistique
Language :
English
Title :
Coherent backscattering of Bose-Einstein condensates in two-dimensional disorder potentials
Publication date :
2008
Journal title :
Physical Review Letters
ISSN :
0031-9007
eISSN :
1079-7114
Publisher :
American Physical Society, Ridge, United States - New York
Volume :
101
Issue :
2
Pages :
020603
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
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