中国物理B ›› 2010, Vol. 19 ›› Issue (8): 83201-083201.doi: 10.1088/1674-1056/19/8/083201

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Effect of atomic initial phase difference on spontaneous emission of an atom embedded in photonic crystal

张冰, 孙秀冬, 姜向前   

  1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2009-11-03 修回日期:2010-01-22 出版日期:2010-08-15 发布日期:2010-08-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10904025 and 10674037), the National Basic Research and Development Program of China (Grant No. 2007CB307001), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20092302120024) and the Program for Excellent Team in Harbin Institute of Technology.

Effect of atomic initial phase difference on spontaneous emission of an atom embedded in photonic crystal

Zhang Bing(张冰), Sun Xiu-Dong(孙秀冬), and Jiang Xiang-Qian(姜向前)   

  1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2009-11-03 Revised:2010-01-22 Online:2010-08-15 Published:2010-08-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10904025 and 10674037), the National Basic Research and Development Program of China (Grant No. 2007CB307001), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20092302120024) and the Program for Excellent Team in Harbin Institute of Technology.

摘要: We investigate the effect of initial phase difference between the two excited states of a V-type three-level atom on its steady state behaviour of spontaneous emission. A modified density of modes is introduced to calculate the spontaneous emission spectra in photonic crystal. Spectra in free space are also shown to compare with that in photonic crystal with different relative positions of the excited levels from upper band-edge frequency. It is found that the initial phase difference plays an important role in the quantum interference property between the two decay channels. For a zero initial phase, destructive property is presented in the spectra. With the increase of initial phase difference, quantum interference between the two decay channels from upper levels to ground level turns to be constructive. Furthermore, we give an interpretation for the property of these spectra.

Abstract: We investigate the effect of initial phase difference between the two excited states of a V-type three-level atom on its steady state behaviour of spontaneous emission. A modified density of modes is introduced to calculate the spontaneous emission spectra in photonic crystal. Spectra in free space are also shown to compare with that in photonic crystal with different relative positions of the excited levels from upper band-edge frequency. It is found that the initial phase difference plays an important role in the quantum interference property between the two decay channels. For a zero initial phase, destructive property is presented in the spectra. With the increase of initial phase difference, quantum interference between the two decay channels from upper levels to ground level turns to be constructive. Furthermore, we give an interpretation for the property of these spectra.

Key words: initial phase difference, spontaneous emission spectrum, quantum interference

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
32.70.Jz (Line shapes, widths, and shifts) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)