Influence of detuning on the spontaneous emission of a driven four-level atom embedded in photonic crystals.
We study the spontaneous emission of a four-level atom with two transitions coupled to a reservoir that has a photonic bandgap near the band edge. Moreover, the transition from the upper level to an auxiliary level is driven by a laser. Considering the different detuning of the external driving field, we discuss some effects, such as a laser-induced dark line, a laser-induced line splitting, and a laser-induced pushing of a dressed state out of the bandgap, which originate from the quantum interference effect and control of the external driving field.
Sun
Xiudong
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Department of Physics, Harbin Institute of Technology, Harbin 150001, China. xdsun@hit.edu.cn
Jiang
Xiangqian
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