Quantum behaviour of pumped and damped triangular Bose-Hubbard systems

OPTICS COMMUNICATIONS

卷:405

Article

Chianca, C. V.¹  Olsen, M. K.¹ 

[1] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

关键词: Bose-Hubbard model;    Pumped and damped;    Squeezing;    Entanglement;   

DOI  :  10.1016/j.optcom.2017.07.075

来源: Elsevier

【 摘 要 】

We propose and analyse analogs of optical cavities for atoms using three-well Bose-Hubbard models with pumping and losses. We consider triangular configurations. With one well pumped and one damped, we find that both the mean-field dynamics and the quantum statistics show a quantitative dependence on the choice of damped well. The systems we analyse remain far from equilibrium, preserving good coherence between the wells in the steady-state. We find quadrature squeezing and mode entanglement for some parameter regimes and demonstrate that the trimer with pumping and damping at the same well is the stronger option for producing non-classical states. Due to recent experimental advances, it should be possible to demonstrate the effects we investigate and predict. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free