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arXiv 2211.07293quant-ph
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非平衡三能级Dicke模型的集体动力学

Collective dynamics of the unbalanced three-level Dicke model

Jingtao Fan, Suotang Jia

AI总结:

本文研究了V构型三能级Dicke模型在封闭和开放条件下的集体动力学,发现其具有超辐射固定点、多相共存和极限环振荡等丰富量子相行为,并证明腔耗散可稳定倒置自旋相干稳态,为高保真度制备相干原子态提供了新方案。

摘要:

我们研究了V构型三能级Dicke模型在封闭和开放条件下的行为。该模型具有可独立调节的相互作用哈密顿量的同向旋转和反向旋转耦合强度,是标准Dicke模型的推广,具有多个不同的参数区域。基于平均场方法和第三量子化分析,发现系统展现出丰富的量子相行为,包括不同的超辐射固定点、多相共存和极限环振荡。特别地,腔耗散稳定了一族倒置自旋相干稳态,通过适当调节同向旋转和反向旋转相互作用之间的不平衡,可以扩大或缩小其稳定区域。这一性质为高保真度制备相干原子态提供了一个概念上全新的方案。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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