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Symmetry between repulsive and attractive interactions in driven-dissipative Bose-Hubbard systems
Journal article   Peer reviewed

Symmetry between repulsive and attractive interactions in driven-dissipative Bose-Hubbard systems

Adil A. Gangat, Ian P. McCulloch and Ying-Jer Kao
Scientific reports, Vol.8(Feb (E-published)), pp.3698-6
27/02/2018
PMID: 29487298

Abstract

The driven-dissipative Bose-Hubbard model can be experimentally realized with either negative or positive onsite detunings, inter-site hopping energies, and onsite interaction energies. Here we use one-dimensional matrix product density operators to perform a fully quantum investigation of the dependence of the non-equilibrium steady states of this model on the signs of these parameters. Due to a symmetry in the Lindblad master equation, we find that simultaneously changing the sign of the interaction energies, hopping energies, and chemical potentials leaves the local boson number distribution and inter-site number correlations invariant, and the steady-state complex conjugated. This shows that all driven-dissipative phenomena of interacting bosons described by the Lindblad master equation, such as “fermionization” and “superbunching”, can equivalently occur with attractive or repulsive interactions.
url
https://doi.org/10.1038/s41598-018-21845-5View
Published (Version of record) Open

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