Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 46: Quantum Gases: Bosons V
Q 46.4: Vortrag
Donnerstag, 3. März 2016, 11:45–12:00, e001
Quantum transport of ultra-cold bosons in optical lattices — •Urs Waldmann1,2, Alberto Rodriguez1, Sandro Wimberger2,3, and Andreas Buchleitner1 — 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg, Germany — 2Dipartimento di Fisica e Scienze della Terra, Università degli Studi di Parma, 43124 Parma, Italy — 3INFN, Sezione di Milano Bicocca, Gruppo Collegato di Parma, Italy
We develop a theoretical framework for the description of experiments on quantum transport of ultra-cold bosons across one-dimensional lattices. We imagine a finite-length lattice connected to reservoirs, which we model by a single-band Bose-Hubbard Hamiltonian with a finite number of sites, connected to some input and output leads. We present first results (obtained by exact diagonalisation) on non-equilibrium dynamics on the closed chain, and on the particle current which can be induced by a finite coupling strength to the leads.