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

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.

10 pages, 5 figures, submitted to Phys. Rev. A

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Cited by in corpus (4)

• Chaotic and quantum dynamics in driven-dissipative bosonic chains
• Inversion of coherent backscattering with interacting Bose-Einstein condensates in two-dimensional disorder : a Truncated Wigner approach
• Universal quantum melting of quasiperiodic attractors in driven-dissipative cavities
• Chaos and quantum regimes in $n$-photon driven, dissipative bosonic chains