Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 4: Quantum Gases (Bosons) I
Q 4.6: Talk
Monday, March 11, 2019, 12:00–12:15, S HS 037 Informatik
Quantum transport between two equilibrating reservoirs — •Giulio Amato1,2,3, Alberto Rodríguez1, Sandro Wimberger2,3, Heinz-Peter Breuer1, and Andreas Buchleitner1 — 1Albert-Ludwigs-Universität Freiburg — 2Universitá degli Studi di Parma — 3Istituto Nazionale di Fisica Nucleare
We study quantum transport across an open quantum system connecting two finite reservoirs initially prepared with a finite particle number imbalance. The equilibration process of the reservoirs leads to a non-stationary current which vanishes once a global equilibrium condition is reached. This behaviour has been experimentally observed in quantum transport setups of fermionic ultracold atoms, with tunable interparticle interactions [1]. We devise a theoretical model based on a set of coupled quantum-classical master equations, describing the evolution
of the system together with the temporal variation of the particle number in the reservoirs. We apply this formalism to investigate nonstationary bosonic currents across a one dimensional Bose-Hubbard lattice.
[1] S. Krinner, T. Esslinger and J.-P. Brantut, J. Phys.: Condens. Matter 29, 343003 (2017)