Reference : Nonlinear transport of Bose-Einstein condensates through mesoscopic waveguides
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/75078
Nonlinear transport of Bose-Einstein condensates through mesoscopic waveguides
English
Paul, T. [> > > >]
Hartung, M. [> > > >]
Richter, K. [> > > >]
Schlagheck, Peter mailto [Université de Liège - ULg > Département de physique > Physique quantique statistique >]
2007
Physical Review. A
American Physical Society
76
6
Yes
International
1050-2947
1094-1622
College Park
MD
[en] We study the coherent flow of interacting Bose-condensed atoms in mesoscopic waveguide geometries. Analytical and numerical methods, based on the mean-field description of the condensate, are developed to study both stationary as well as time-dependent propagation processes. We apply these methods to the propagation of a condensate through an atomic quantum dot in a waveguide, discuss the nonlinear transmission spectrum and show that resonant transport is generally suppressed due to an interaction-induced bistability phenomenon. Finally, we establish a link between the nonlinear features of the transmission spectrum and the self-consistent quasibound states of the quantum dot.
http://hdl.handle.net/2268/75078
10.1103/PhysRevA.76.063605

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