The spontaneous emission of an excited atom embedded in photonic crystals with two atomic position-dependent bands

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• 作者：XianShan Huang (1)
  HaiLian Liu (1)
  Dong Wang (1)
  XuTao Mo (1)
  HouTong Liu (1)
  
• 关键词：spontaneous emission ; photonic crystals ; two atomic position ; dependent bands
• 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
• 出版年：2013
• 出版时间：March 2013
• 年：2013
• 卷：56
• 期：3
• 页码：524-529
• 全文大小：478KB
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• 作者单位：XianShan Huang (1)
  HaiLian Liu (1)
  Dong Wang (1)
  XuTao Mo (1)
  HouTong Liu (1)
  
  1. School of Mathematics and Physics, Anhui University of Technology, Maanshan, 243002, China
  
• ISSN：1869-1927

文摘

The spontaneous emission of an excited atom embedded in photonic crystals with two atomic position-dependent bands is investigated. The distribution of the density of states between two bands depends on the atomic position in a unit cell of the photonic crystal and is described with an atomic position-dependent parameter. The result shows that the emitted field and the time evolution of the upper-level population are affected by the atomic position and the gap width. The spontaneous emission spectrum in free space can be shifted and narrowed with the photonic reservoir and the gap width.