The Dicke model provides a simple fully quantum mechanical description of the interaction between light confined in a cavity and matter. It predicts a phase transition between a state where the cavity is empty and a superradiant phase where the cavity mode is macroscopically occupied. However, experimental realisations of this model are all in non-equilibrium situations where driving and dissipation are important. We have been involved in developing techniques to understand the fate of this phase transition in the presence of various non-equilibrium effects.

Recent publications about the Dicke model are below:

Super-correlated radiance in nonlinear photonic waveguides Zhihai Wang, Tuomas Jaako, Peter Kirton, Peter Rabl Phys. Rev. Lett. 124, 213601 (2020) arXiv

Introduction to the Dicke model: from equilibrium to nonequilibrium, and vice versa Peter Kirton, Mor M. Roses, Jonathan Keeling, Emanuele G. Dalla Torre Adv. Quantum Tech. (2018) arXiv

Superradiant and lasing states in driven-dissipative Dicke models Peter Kirton and Jonathan Keeling New J. Phys. 20, 015009 (2018) arXiv

Suppressing and restoring the Dicke superradiance transition by dephasing and decay Peter Kirton and Jonathan Keeling Phys. Rev. Lett. 118, 123602 (2017) arXiv