Dissipation-induced transitions to superradiant states in a three-level Dicke dimer

Abstract

Superradiance is a phenomenon observed in few level atoms coupled to a single light mode. In this work, the phase transition into the superradiant (SR) phase was demonstrated for a three-level Dicke dimer model and we saw the emergence of two types of superradiance. These two types of superradiance can be distinguished by the phase difference of the steady state photon mode in each site: (i) superradiant-1 (SR1) has in-phase photon modes while (ii) superradiant-2 (SR2) has out-of-phase photon modes. It was also shown that varying the dissipation strength leads to the system favoring one type of SR phase with SR1 being the dominant phase for weak dissipation while SR2 being the dominant phase for strong dissipation.