Gain-assisted superluminal light propagation through a Bose-Einstein condensate cavity system
arXiv:1504.05973 · doi:10.1140/epjd/e2015-60506-8
Abstract
The propagation of a probe laser field in a cavity optomechanical system with a Bose-Einstein condensate is studied. The transmission properties of the system are investigated and it is shown that the group velocity of the probe pulse field can be controlled by Rabi frequency of the pump laser field. The effect of the decay rate of the cavity photons on the group velocity is studied and it is demonstrated that for small values of the decay rates, the slope of phase dispersion switches from positive to negative just by changing the Rabi frequency of the pump field. Then, the gain-assisted superluminal light propagation due to the cross-Kerr nonlinearity is established in cavity optomechanical system with a Bose-Einstein condensate. Such behavior can not appear in the pump-probe two-level atomic systems in the normal phase. We also find that the amplification is achieved without inversion in the population of the quantum energy levels.
6 pages, 6 figures
References in corpus (7)
- Optomechanically induced transparency
- Cavity Opto-Mechanics with a Bose-Einstein Condensate
- Tunable fast and slow light in a hybrid optomechanical system
- Light propagation through closed-loop atomic media beyond the multiphoton resonance condition
- Superluminal and Ultraslow Light Propagation in Optomechanical Systems
- Nonlinear dynamics of a cigar-shaped Bose-Einstein condensate coupled with a single cavity mode
- Subluminal to superluminal propagation of an optical pulse in an f-deformed Bose- Einstein condensate
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