论文标题
不平衡三级迪克模型的集体动力学
Collective dynamics of the unbalanced three-level Dicke model
论文作者
论文摘要
我们研究了在封闭条件和开放条件下的V-Configuration中的三级DICKE模型。凭借相互作用哈密顿量相互作用的独立共旋转耦合强度，该模型是标准DICKE模型的概括，该模型具有多个不同的参数状态。基于平均场方法和第三个量化分析，发现该系统表现出丰富的量子相行为，包括不同的超级固定点，多相共存和限制周期振荡。特别是，腔耗散稳定了一个倒置的自旋连贯稳态家族，通过正确调整共旋转相互作用和反旋转相互作用之间的不平衡，可以扩大或减少其稳定区域。该属性在概念上提供了一种新的方案，以高保真准备相干的原子状态。
We study a three-level Dicke model in V-configuration under both closed and open conditions. With independently tunable co- and counter-rotating coupling strength of the interaction Hamiltonian, this model is a generalization of the standard Dicke model that features multiple distinct parameter regimes. Based on a mean-field approach and third quantization analysis, it is found that the system exhibits rich quantum phase behaviours, including distinct superradiant fixed points, multi-phase coexistence and limit cycle oscillation. In particular, the cavity dissipation stabilizes a family of inverted spin coherent steady states, whose stability region can be enlarged or reduced by properly tuning the imbalance between the co- and counter-rotating interactions. This property provide a conceptually new scenario to prepare coherent atomic state with high fidelity.
