# Berlin 2014 – wissenschaftliches Programm

## Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

# Q: Fachverband Quantenoptik und Photonik

## Q 32: Poster: Quantum gases, ultracold atoms and molecules

### Q 32.38: Poster

### Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

**Steady State Currents in the Driven Dissipative Bose-Hubbard Model** — •Thomas Mertz^{1}, Ivana Vidanovic^{1}, Daniel Cocks^{1,2}, and Walter Hofstetter^{1} — ^{1}Institute for Theoretical Physics, Goethe-University, Frankfurt am Main — ^{2}School of Engineering and Physical Sciences, James Cook University, Townsville, Australia

Non-equilibrium dynamics of interacting bosons has been explored intensely in recent experiments in both cold atoms and quantum optical systems. We study the driven Bose-Hubbard model with one-body loss in two dimensions for both spatially homogeneous and inhomogeneous coupling to the environment. We describe dissipation by coupling the system to a Markovian bath in terms of a Lindblad master equation for the reduced density operator. In our work we analyse the steady states of such systems, in particular we consider steady states that exhibit constant particle currents supported by inhomogeneous coupling to the environment. Furthermore, we investigate the effect of the bath parameters on the occurence of constant currents.