Abstract
The fast and slow light effects of a transmitted probe light are researched in a hybrid atom–cavity optomechanical system, which is composed of an optical cavity, a mechanical resonator, and an atomic ensemble. The results show that the fast light generated in this hybrid system can be easily converted into slow light and vice versa, and that this fast–slow light conversion depends on a critical power of the control light, which corresponds to the fact that the probe light can be completely absorbed. Interestingly, this critical power can be modulated by changing the cavity coupling parameter or the atom–cavity coupling strength. Therefore, the fast–slow light conversion can be easily controlled.
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