Steady-state localized-delocalized phase transition of an incoherent-pumped dissipative Bose-Hubbard model
Abstract
We investigate steady-state properties of a two-dimensional incoherent-pumped dissipative Bose-Hubbard model, which describes a photon square lattice. This incoherent pumping exhibits an important environment-induced higher-order fluctuation effect, which induces a strong competition between the driven-dissipative channel, the photon-photon interaction, and the photon hopping in multi-photon processes. This new competition gives rise to a spontaneous breaking of the U(1) symmetry of system. As a result, we predict a many-body steady-state localized-delocalized phase transition and an anti-blockade effect, in which the increasing of the repulsive photon-photon interaction promotes the emergence of phase transition. These unconventional many-body steady-state phenomena can be understood by analyzing the single-cavity properties. Our results pave a new way to control many-body dynamics of driven-dissipative systems.
Keywords
Cite
@article{arxiv.1609.04159,
title = {Steady-state localized-delocalized phase transition of an incoherent-pumped dissipative Bose-Hubbard model},
author = {Yuanwei Zhang and Jingtao Fan and Gang Chen and Wu-Ming Liu},
journal= {arXiv preprint arXiv:1609.04159},
year = {2016}
}