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arXiv · 1412.3598

Elastic and inelastic transmission in guided atom lasers: a truncated Wigner approach

Julien Dujardin·Arturo Argüelles·Peter Schlagheck
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Abstract

We study the transport properties of an ultracold gas of Bose-Einstein condensate that is coupled from a magnetic trap into a one-dimensional waveguide. Our theoretical approach to tackle this problem is based on the truncated Wigner method for which we assume the system to consist of two semi-infinite non-interacting leads and a finite interacting scattering region with two constrictions modelling an atomic quantum dot. The transmission is computed in the steady-state regime and we find a good agreement between truncated Wigner and Matrix-Product State calculations. We also identify clear signatures of inelastic resonant scattering by analyzing the distribution of energy in the transmitted atomic matter wave beam.

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Julien Dujardin, Arturo Argüelles, Peter Schlagheck. 2014-12-11. Elastic and inelastic transmission in guided atom lasers: a truncated Wigner approach. https://doi.org/10.1103/physreva.91.033614

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