QUANTUM INTERFERENCE EFFECTS IN SPONTANEOUS EMISSION FROM AN ATOM EMBEDDED IN A PHOTONIC BAND GAP STRUCTURE
QUANTUM INTERFERENCE EFFECTS IN SPONTANEOUS EMISSION FROM AN ATOM EMBEDDED IN A PHOTONIC BAND GAP STRUCTURE
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DOI：
10.1103/physrevlett.79.205
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发表时间：
1997-07
影响因子：
8.6
通讯作者：
Shi-Yao Zhu;Hong Chen;H. Huang
中科院分区：
文献类型：
--
作者：
Shi-Yao Zhu;Hong Chen;H. Huang
研究了光子带隙结构中三能级原子的自发辐射。两个跃迁之间的干涉导致两个上能级之间布居的大幅度准周期振荡。原子的自发辐射由辐射场中的三个分量表征：局域部分、行进脉冲和衰减部分。得到了局域场的局域距离的解析表达式。行进脉冲的能量速度可以接近于零。通过选择合适的初始叠加态，可以实现大量的布居俘获。
The spontaneous emission from a three-level atom embedded in a photonic band gap structure is studied. Interference between two transitions leads to quasiperiodic oscillations of population between the two upper levels with large amplitudes. The spontaneous emission of the atom is characterized by three components in the radiated field: a localized part, a traveling pulse, and a $(1/\sqrt{t}{)}^{3}$ decaying part. An analytical expression for the localization distance of the localized field is obtained. The energy velocity for the traveling pulse could be close to zero. By selecting an appropriate initial superposition state, a large amount of population trapping can be achieved.