Open AccessDicke model
Author(s) -
Mor M. Roses,
Emanuele G. Dalla Torre
Publication year - 2020
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0235197
Subject(s) - physics , quantum phase transition , quantum , phase transition , quantum optics , universality (dynamical systems) , ising model , cavity quantum electrodynamics , renormalization group , quantum mechanics , critical phenomena , quantum electrodynamics , open quantum system
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.