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Spontaneous emission spectrum of a three-level atom embedded in photonic crystal

机译：嵌入光子晶体的三能级原子的自发发射光谱

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摘要

The two models of three-level (one upper level and two lower levels, or two upper levels and one lower level) atom embedded in a double-band photonic crystal are adopted. The atomic transitions from the upper levels to the lower levels are assumed to be coupled by the same reservoir which are respectively the isotropic photonic band gap (PBG) modes, the anisotropic PBG modes and the free vacuum modes. The effects of the fine structure of the atomic ground state levels in the model with one upper level and two lower levels, and the quantum interferences in the model with two upper levels and one lower level on the spontaneous emission spectrum of an atom are investigated in detail. Most interestingly, it is shown that new spontaneous emission lines are produced from the fine splitting of atomic ground state levels in the isotropic PBG case. The quantum interferences induce additional narrow spontaneous lines near them transition from the empty upper level to the lower level.
机译：采用嵌入在双带光子晶体中的两种三级原子模型（一个上层和两个下层，或两个上层和一个下层）。假定从上层到下层的原子跃迁是由相同的储集层耦合的，它们分别是各向同性光子带隙（PBG）模式，各向异性PBG模式和自由真空模式。研究了一高两低模型中原子基态能级的精细结构和二高一低模型中的量子干扰对原子自发发射光谱的影响。详情。最有趣的是，表明在各向同性PBG情况下，原子基态能级的精细分裂会产生新的自发发射线。量子干扰在其附近诱导了其他狭窄的自发线，这些自发线从空的上层跃迁到下层。

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