105 citations · 232 across the 9 of their papers we have counts for
4 papers · 1 filter
Topological degeneracy and decoherence-protected qubits in circuit QED
Gang Chen, Zheng-Yuan Xue, J. -Q. Liang
We introduce an extended Dicke model with controllable long-range atom-atom interaction to simulate topologically ordered states and achieve decoherence-protected qubits. We illust…
Exotic quantum phase transitions in a Bose-Einstein condensate coupled to an optical cavity
Gang Chen, Xiaoguang Wang, J. -Q. Liang +1
A new extended Dicke model, which includes atom-atom interactions and a driving classical laser field, is established for a Bose-Einstein condensate inside an ultrahigh-finesse opt…
Ground-State Properties for Coupled Bose-Einstein Condensates inside a Cavity Quantum Electrodynamics
Gang Chen, Zidong Chen, J. -Q. Liang
We analytically investigate the ground-state properties of two-component Bose-Einstein condensates with few ⁸⁷Rb atoms inside a high-quality cavity quantum electrodynam…
Critical Property of Geometric Phase in the Dicke Model
Gang Chen, Juqi Li, J. -Q. Liang
We obtain the ground-state energy level and associated geometric phase in the Dicke model analytically by means of the Holstein-Primakoff transformation and the boson expansion app…