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arXiv · 1609.04159

Steady-state localized-delocalized phase transition of an incoherent-pumped dissipative Bose-Hubbard model

Yuanwei Zhang·Jingtao Fan·Gang Chen·Wu-Ming Liu
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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.

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Yuanwei Zhang, Jingtao Fan, Gang Chen, Wu-Ming Liu. 2016-09-14. Steady-state localized-delocalized phase transition of an incoherent-pumped dissipative Bose-Hubbard model. https://arxiv.org/abs/1609.04159

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