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arXiv · 1801.07888

Dicke model simulation via cavity-assisted Raman transitions

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

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Zhang Zhiqiang, Chern Hui Lee, Ravi Kumar, K. J. Arnold, Stuart J. Masson, A. L. Grimsmo, A. S. Parkins, M. D. Barrett. 2018-01-24. Dicke model simulation via cavity-assisted Raman transitions. https://doi.org/10.1103/physreva.97.043858

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