中国物理B ›› 2005, Vol. 14 ›› Issue (1): 102-109.doi: 10.1088/1009-1963/14/1/019

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

刘国强, 王健, 张汉壮   

  1. College of Physics, Jilin University, Changchun,130023, China
  • 收稿日期:2003-10-18 修回日期:2004-08-18 出版日期:2005-01-20 发布日期:2005-01-20
  • 基金资助:
    Project supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry,and the Innovative Research Foundation of Jilin University

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

Liu Guo-Qiang (刘国强), Wang Jian (王健), Zhang Han-Zhuang (张汉壮)   

  1. College of Physics, Jilin University, Changchun 130023, China
  • Received:2003-10-18 Revised:2004-08-18 Online:2005-01-20 Published:2005-01-20
  • Supported by:
    Project supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry,and the Innovative Research Foundation of Jilin University

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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 the transition from the empty upper level to the lower level.

关键词: photonic band gap, quantum interference, spontaneous emission spectrum

Abstract: 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 the transition from the empty upper level to the lower level.

Key words: photonic band gap, quantum interference, spontaneous emission spectrum

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