中国物理B ›› 2013, Vol. 22 ›› Issue (10): 104203-104203.doi: 10.1088/1674-1056/22/10/104203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Phase grating in a doubly degenerate four-level system

刘云, 王朴, 彭双艳   

  1. College of Physics Science and Technology, Bijie University, Bijie 551700, China
  • 收稿日期:2013-12-06 修回日期:2013-06-17 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported by the Joint Fund for Science and Technology of Bijie University, Science and Technology Bureau of Bijie City, Science and Technology Department of Guizhou Province (Grant No. J-LKB [2013] 17), and the China Postdoctoral Science Foundation (Grant No. 2011M500951).

Phase grating in a doubly degenerate four-level system

Liu Yun (刘云), Wang Pu (王朴), Peng Shuang-Yan (彭双艳)   

  1. College of Physics Science and Technology, Bijie University, Bijie 551700, China
  • Received:2013-12-06 Revised:2013-06-17 Online:2013-08-30 Published:2013-08-30
  • Contact: Liu Yun E-mail:liuyun0865@163.com
  • Supported by:
    Project supported by the Joint Fund for Science and Technology of Bijie University, Science and Technology Bureau of Bijie City, Science and Technology Department of Guizhou Province (Grant No. J-LKB [2013] 17), and the China Postdoctoral Science Foundation (Grant No. 2011M500951).

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摘要： In this paper, we suggest a doubly degenerate four-level system, in which the transition takes place between the hyperfine energy 52S1/2 F=1 and 52P3/2 F=2 in rubidium 87 D2 line, for studying atomic phase grating based on the cross-Kerr and phase conjugation effects. The phase grating with high efficiency can be obtained by tuning phase shift Φ between the coupling and probe field, when the coupling intensity is much stronger than the strength of probe field. Under different coupling intensities, a high diffraction efficiency can be maintained. A new and simple way of implementing phase grating is presented. However, in such an atomic system, two main limitations must be taken into account. First, the independence between steady state probe susceptibility and the coupling intensity, when the population decay rate is larger than the Rabi frequency of the coupling field, cannot result in diffraction grating; second, the sample to be prepared should not be too long.

关键词: phase grating, quantum interference, four-level system, standing-wave

Abstract: In this paper, we suggest a doubly degenerate four-level system, in which the transition takes place between the hyperfine energy 52S1/2 F=1 and 52P3/2 F=2 in rubidium 87 D2 line, for studying atomic phase grating based on the cross-Kerr and phase conjugation effects. The phase grating with high efficiency can be obtained by tuning phase shift Φ between the coupling and probe field, when the coupling intensity is much stronger than the strength of probe field. Under different coupling intensities, a high diffraction efficiency can be maintained. A new and simple way of implementing phase grating is presented. However, in such an atomic system, two main limitations must be taken into account. First, the independence between steady state probe susceptibility and the coupling intensity, when the population decay rate is larger than the Rabi frequency of the coupling field, cannot result in diffraction grating; second, the sample to be prepared should not be too long.

Key words: phase grating, quantum interference, four-level system, standing-wave

中图分类号:  (Optical implementations of quantum information processing and transfer)

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