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

Ivana Vidanović, Daniel Cocks, and Walter Hofstetter
Phys. Rev. A 89, 053614 – Published 12 May 2014

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.

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  • Received 31 January 2014

DOI:https://doi.org/10.1103/PhysRevA.89.053614

©2014 American Physical Society

Authors & Affiliations

Ivana Vidanović, Daniel Cocks, and Walter Hofstetter

  • Institut für Theoretische Physik, Johann-Wolfgang-Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany

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Issue

Vol. 89, Iss. 5 — May 2014

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