Dissipation through localized loss in bosonic systems with long-range interactions
Abstract
In recent years, controlled dissipation has proven to be a useful tool for the probing of a quantum system in an ultracold setup. In this paper we consider the dynamics of bosons induced by a dissipative local defect. We address superfluid and supersolid phases close to half filling that are ground states of an extended Bose-Hubbard Hamiltonian. To this end, we solve the master equation using the Gutzwiller approximation and find that in the superfluid phase repulsive nearest-neighbor interactions can lead to enhanced dissipation processes. On the other hand, our mean-field approach indicates that the effective loss rates are significantly suppressed deep in the supersolid phase where repulsive nearest-neighbor interactions play a dominant role. Our numerical results are explained by analytical arguments and, in particular, in the limit of strong dissipation we recover the quantum Zeno effect.
- Publication:
-
Physical Review A
- Pub Date:
- May 2014
- DOI:
- 10.1103/PhysRevA.89.053614
- arXiv:
- arXiv:1402.0011
- Bibcode:
- 2014PhRvA..89e3614V
- Keywords:
-
- 03.75.Kk;
- 03.65.Yz;
- 67.85.De;
- Dynamic properties of condensates;
- collective and hydrodynamic excitations superfluid flow;
- Decoherence;
- open systems;
- quantum statistical methods;
- excitations and superfluid flow;
- Condensed Matter - Quantum Gases
- E-Print:
- 10 pages, 11 figures