Dicke model
Mor M. Roses, Emanuele G. Dalla Torre
Abstract
The Dicke model is a fundamental model of quantum optics, which describes the interaction between light and matter. In the Dicke model, the light component is described as a single quantum mode, while the matter is described as a set of two-level systems. When the coupling between the light and matter crosses a critical value, the Dicke model shows a mean-field phase transition to a superradiant phase. This transition belongs to the Ising universality class and was realized experimentally in cavity quantum electrodynamics experiments. Although the superradiant transition bears some analogy with the lasing instability, these two transitions belong to different universality classes.
Topics & Concepts
PhysicsQuantum phase transitionQuantumPhase transitionQuantum opticsUniversality (dynamical systems)Ising modelCavity quantum electrodynamicsRenormalization groupQuantum mechanicsCritical phenomenaQuantum electrodynamicsOpen quantum systemQuantum Information and CryptographyCold Atom Physics and Bose-Einstein CondensatesQuantum Mechanics and Applications