The superradiant phase transition (SRT) is prohibited in the standard isotropic Dicke model by the no-go theorem, which is induced by the ${A}^{2}$ term. Within the Dicke model framework, we demonstrate that SRTs can occur at both zero and finite temperatures by independently tuning the rotating-wave and counter-rotating atom-cavity couplings and/or introducing nonlinear Stark coupling terms, thereby overcoming the no-go theorem. The phase transitions in the anisotropic Dicke-Stark model belong to the same universality class as the original Dicke model. We believe that we have proposed a feasible scheme for observing SRTs in future solid-state experiments.The superradiant phase transition (SRT) is prohibited in the standard isotropic Dicke model by the no-go theorem, which is induced by the ${A}^{2}$ term. Within the Dicke model framework, we demonstrate that SRTs can occur at both zero and finite temperatures by independently tuning the rotating-wave and counter-rotating atom-cavity couplings and/or introducing nonlinear Stark coupling terms, thereby overcoming the no-go theorem. The phase transitions in the anisotropic Dicke-Stark model belong to the same universality class as the original Dicke model. We believe that we have proposed a feasible scheme for observing SRTs in future solid-state experiments.

arXiv:2405.19776Physical Review ADec 26, 20249 citations

Superradiance and subradiance on theedge of Dicke’s regime

Igor Ferrier-Barbut

Sep 1, 20210 citations

Superradiance and subradiance on the edge of Dicke’s regime

Igor Ferrier-Barbut

Sep 1, 20210 citations

The superradiant phase transition (SRT) is prohibited in the standard isotropic Dicke model by the no-go theorem, which is induced by the

{A}^{2}

term. Within the Dicke model framework, we demonstrate that SRTs can occur at both zero and finite temperatures by independently tuning the rotating-wave and counter-rotating atom-cavity couplings and/or introducing nonlinear Stark coupling terms, thereby overcoming the no-go theorem. The phase transitions in the anisotropic Dicke-Stark model belong to the same universality class as the original Dicke model. We believe that we have proposed a feasible scheme for observing SRTs in future solid-state experiments.