Dicke model simulation via cavity-assisted Raman transitions

TL;DR

This paper demonstrates a simulation of the Dicke model using cavity-assisted Raman transitions with counter-propagating lasers, highlighting the importance of motional effects and Doppler broadening in the experimental results.

Contribution

It introduces a novel method for simulating the Dicke model with cavity-assisted Raman transitions and provides a theoretical framework accounting for motional effects and beam geometries.

Findings

Motional effects significantly influence the observed phenomena.

Doppler broadening affects the thresholds in the Dicke model simulation.

Counter-propagating laser configuration offers distinct advantages over single-beam setups.

Abstract

The Dicke model is of fundamental importance in quantum mechanics for understanding the collective behaviour of atoms coupled to a single electromagnetic mode. In this paper, we demonstrate a Dicke-model simulation using cavity-assisted Raman transitions in a configuration using counter-propagating laser beams. The observations indicate that motional effects should be included to fully account for the results and these results are contrasted with the experiments using single-beam and co-propagating configurations. A theoretical description is given that accounts for the beam geometries used in the experiments and indicates the potential role of motional effects. In particular a model is given that highlights the influence of Doppler broadening on the observed thresholds.