Dicke model simulation via cavity-assisted Raman transitions
| Autor: | Chern Hui Lee, Murray D. Barrett, A. S. Parkins, Arne L. Grimsmo, Stuart J. Masson, K. J. Arnold, Zhiqiang Zhang, Ravi Kumar |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Collective behavior Quantum Physics Atomic Physics (physics.atom-ph) FOS: Physical sciences 01 natural sciences Electromagnetic mode 010305 fluids & plasmas Physics - Atomic Physics symbols.namesake 0103 physical sciences Model simulation symbols Physics::Atomic Physics Atomic physics 010306 general physics Raman spectroscopy Quantum Physics (quant-ph) Beam (structure) Laser beams Doppler broadening |
| Popis: | 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. 12 pages,12 figures |
| Databáze: | OpenAIRE |
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