Floquet Engineering of Non-Equilibrium Superradiance

Abstract

We demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the constant photonic steady state of the equilibrium superradiant phase in the Dicke model. We relate this superradiant phase to the population inversion of Floquet states by introducing a Schwinger representation of the driven two-level systems in the cavity. This inversion is depleted near Floquet energies that are resonant with the cavity frequency to sustain a coherent light-field. In particular, our model applies to solids within a two-band approximation, in which the electrons act as Schwinger fermions. We propose to use this Floquet-assisted superradiant phase to obtain controllable optical gain for a laser-like operation.

References in corpus (11)

• Topological Photonics
• Photovoltaic Hall effect in graphene
• Dynamical phase transition in the open Dicke model
• Tailoring quantum gases by Floquet engineering
• Single-qubit lasing and cooling at the Rabi frequency
• Atom-only descriptions of the driven-dissipative Dicke model
• Population inversion of driven two-level systems in a structureless bath
• Realization of a periodically driven open three-level Dicke model
• Observing light-induced Floquet band gaps in the longitudinal conductivity of graphene
• Double Quantum Dot Floquet Gain Medium
• Parametrically driven-dissipative three-level Dicke model