Collective dynamics of the unbalanced three-level Dicke model

• URL: http://arxiv.org/abs/2211.07293v2
• Date: Thu, 17 Nov 2022 09:18:10 GMT
• Title: Collective dynamics of the unbalanced three-level Dicke model
• Authors: Jingtao Fan, Suotang Jia
• Abstract summary: 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. It is found that the system exhibits rich quantum phase behaviours, including distinct superradiant fixed points, multi-phase coexistence and limit cycle oscillation.
• Score: 1.6621646421302865
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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