Abstract
The coherent flow of a Bose-Einstein condensate through a quantum dot in a magnetic waveguide is studied. By the numerical integration of the time-dependent Gross-Pitaevskii equation in the presence of a source term, we simulate the propagation process of the condensate through a double barrier potential in the waveguide. We find that resonant transport is suppressed in interaction-induced regimes of bistability, where multiple scattering states exist at the same chemical potential and the same incident current. We demonstrate, however, that a temporal control of the external potential can be used to circumvent this limitation and to obtain enhanced transmission near the resonance on experimentally realistic time scales.
Paul, Tobias;
Richter, Klaus;
Schlagheck, Peter
[1]
- Institut fuer Theoretische Physik, Universitaet Regensburg, 93040 Regensburg (Germany)
Citation Formats
Paul, Tobias, Richter, Klaus, and Schlagheck, Peter.
Nonlinear resonant transport of Bose-Einstein condensates.
United States: N. p.,
2005.
Web.
doi:10.1103/PhysRevLett.94.020404.
Paul, Tobias, Richter, Klaus, & Schlagheck, Peter.
Nonlinear resonant transport of Bose-Einstein condensates.
United States.
https://doi.org/10.1103/PhysRevLett.94.020404
Paul, Tobias, Richter, Klaus, and Schlagheck, Peter.
2005.
"Nonlinear resonant transport of Bose-Einstein condensates."
United States.
https://doi.org/10.1103/PhysRevLett.94.020404.
@misc{etde_20621651,
title = {Nonlinear resonant transport of Bose-Einstein condensates}
author = {Paul, Tobias, Richter, Klaus, and Schlagheck, Peter}
abstractNote = {The coherent flow of a Bose-Einstein condensate through a quantum dot in a magnetic waveguide is studied. By the numerical integration of the time-dependent Gross-Pitaevskii equation in the presence of a source term, we simulate the propagation process of the condensate through a double barrier potential in the waveguide. We find that resonant transport is suppressed in interaction-induced regimes of bistability, where multiple scattering states exist at the same chemical potential and the same incident current. We demonstrate, however, that a temporal control of the external potential can be used to circumvent this limitation and to obtain enhanced transmission near the resonance on experimentally realistic time scales.}
doi = {10.1103/PhysRevLett.94.020404}
journal = []
issue = {2}
volume = {94}
journal type = {AC}
place = {United States}
year = {2005}
month = {Jan}
}
title = {Nonlinear resonant transport of Bose-Einstein condensates}
author = {Paul, Tobias, Richter, Klaus, and Schlagheck, Peter}
abstractNote = {The coherent flow of a Bose-Einstein condensate through a quantum dot in a magnetic waveguide is studied. By the numerical integration of the time-dependent Gross-Pitaevskii equation in the presence of a source term, we simulate the propagation process of the condensate through a double barrier potential in the waveguide. We find that resonant transport is suppressed in interaction-induced regimes of bistability, where multiple scattering states exist at the same chemical potential and the same incident current. We demonstrate, however, that a temporal control of the external potential can be used to circumvent this limitation and to obtain enhanced transmission near the resonance on experimentally realistic time scales.}
doi = {10.1103/PhysRevLett.94.020404}
journal = []
issue = {2}
volume = {94}
journal type = {AC}
place = {United States}
year = {2005}
month = {Jan}
}