Dissipation through localized loss in bosonic systems with long-range interactions

Vidanović, Ivana, Cocks, Daniel, and Hofstetter, Walter (2014) Dissipation through localized loss in bosonic systems with long-range interactions. Physical Review A (Atomic, Molecular and Optical Physics), 89. 053614.

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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.

Item ID: 34725
Item Type: Article (Research - C1)
ISSN: 1094-1622
Funders: German Science Foundation (GSF)
Projects and Grants: GSF Sonderforschungsbereich SFB/TR 49 , GSF Forschergruppe FOR801
Date Deposited: 27 Aug 2014 02:27
FoR Codes: 02 PHYSICAL SCIENCES > 0206 Quantum Physics > 020601 Degenerate Quantum Gases and Atom Optics @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%
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