3 years ago

Dicke model simulation via cavity-assisted Raman transitions.

Ravi Kumar, A. S. Parkins, Stuart J. Masson, K. J. Arnold, Chern Hui Lee, M. D. Barrett, A. L. Grimsmo, Zhang Zhiqiang

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.

Publisher URL: http://arxiv.org/abs/1801.07888

DOI: arXiv:1801.07888v1

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