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Nonlinear Resonant Transport of Bose Einstein Condensates

Tobias Paul·Klaus Richter·Peter Schlagheck
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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 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.

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Tobias Paul, Klaus Richter, Peter Schlagheck. 2004-07-19. Nonlinear Resonant Transport of Bose Einstein Condensates. https://doi.org/10.1103/physrevlett.94.020404

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