Publication
Title
Optically bistable driven-dissipative Bose-Hubbard dimer: Gutzwiller approaches and entanglement
Author
Abstract
We examine theoretically the driven-dissipative Bose-Hubbard dimer in the optical bistable regime. Various approximation schemes based on a Gutzwiller mean-field decoupling are applied and compared. Depending on the system parameters, we show that a decoupling with respect to the real space or to the reciprocal space can be more accurate. The Gutzwiller decoupling is applied both at the level of the density matrix and for the wave function during a quantum trajectory simulation. The latter is shown to be a more accurate approximation. A Gaussian approximation for the nonhomogeneous antibonding mode is also explored. We also show that entanglement in this system is witnessed by squeezing in reciprocal space.
Language
English
Source (journal)
PHYSICAL REVIEW A
Publication
2017
Volume/pages
95 :4 (2017) , 11 p.
Article Reference
043833
ISI
000399786800016
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 02.08.2018
Last edited 20.09.2021
To cite this reference