Non-Equilibrium Quantum Phases of Two-Atom Dicke Model
arXiv:1405.4939 · doi:10.1016/j.physleta.2014.09.052
Abstract
In this paper, we investigate the non-equilibrium quantum phases of the two-atom Dicke model, which can be realized in a two species Bose-Einstein condensate interacting with a single light mode in an optical cavity. Apart from the usual non-equilibrium normal and inverted phases, a non-equilibrium mixed phase is possible which is a combination of normal and inverted phase. A new kind of quantum phase transition is predicted from non-superradiant mixed phase to the superradiant phase which can be achieved by tuning the two different atom-photon couplings. We also show that a quantum phase transition from the non-superradiant mixed phase to the superradiant phase is forbidden for certain values of the two atom-photon coupling strengths.
arXiv comment5 pages, Comments Welcome
References in corpus (18)
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Cold atoms in cavity-generated dynamical optical potentials
- Chaos and the Quantum Phase Transition in the Dicke Model
- Proposed realization of the Dicke-model quantum phase transition in an optical cavity QED system
- Exploring Symmetry Breaking at the Dicke Quantum Phase Transition
- The Dicke model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity
- Dynamics of Nonequilibrium Dicke Models
- Real-time observation of fluctuations at the driven-dissipative Dicke phase transition
- Emergent superfluid crystals, frustration, and topologically defected states in multimode cavity QED
- Dicke quantum spin glass of atoms and photons
- Frustration and glassiness in spin models with cavity-mediated interactions
- Dicke Quantum Spin and Photon Glass in Optical Cavities: Non-equilibrium theory and experimental signatures
- Steering matter wave superradiance with an ultra-narrowband optical cavity
- Light-shift-induced quantum phase transitions of a Bose-Einstein condensate in the optical cavities
- Collective excitations and marginal stability of quantum Ising spin glasses
- Analog of the spin-orbit induced anomalous Hall effect with quantized radiation
- Optomechanical effect on the Dicke quantum phase transition and quasi-particle damping in a Bose-Einstein Condensate: A new tool to measure weak force
- Opto-mechanical effects in self-organization of a Bose-Einstein condensate in an optical cavity