中国物理B ›› 2006, Vol. 15 ›› Issue (2): 375-382.doi: 10.1088/1009-1963/15/2/024

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Theory of two-photon micromaser: competition among different transition processes

杜四德1, 孙为辉2, 陈效双3   

  1. (1)Department of Physics, Fudan University, Shanghai 200433, China; (2)Department of Physics, Fudan University, Shanghai 200433, China;Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China; (3)National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu-Tian Road, Shanghai 200083, China
  • 收稿日期:2005-05-11 修回日期:2005-10-26 出版日期:2006-02-20 发布日期:2006-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China, the National Key Basic Research Special Foundation of China, the Major Program of the National Natural Science Foundation of China (Grant No 10234040), and the Shanghai Foundation for Development of Science and Technology (Grant No 02DJ14066).

Theory of two-photon micromaser: competition among different transition processes

Sun Wei-Hui (孙为辉)ab, Du Si-De (杜四德)a, Chen Xiao-Shuang (陈效双)c   

  1. a Department of Physics, Fudan University, Shanghai 200433, China; b Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China; c National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu-Tian Road, Shanghai 200083, China
  • Received:2005-05-11 Revised:2005-10-26 Online:2006-02-20 Published:2006-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China, the National Key Basic Research Special Foundation of China, the Major Program of the National Natural Science Foundation of China (Grant No 10234040), and the Shanghai Foundation for Development of Science and Technology (Grant No 02DJ14066).

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摘要： We have investigated the steady-state cavity-field properties of a single-mode two-photon micromaser when the atoms in a cascade three-level configuration are initially prepared in a mixture of the upper and intermediate states. The mean photon number, trapping state and sub-Poissonian effect are discussed with upper (intermediate)-state population changing from 1(0) to 0(1). These properties are very different from those in a pure two- or one-photon transition process, due to the competition among different transition processes. In particular, the trapping states of nonzero photons are discovered in this system under some conditions, which is contrary to the previous findings.

关键词: two-photon micromaser, trapping states, sub-Poissonian distribution

Abstract: We have investigated the steady-state cavity-field properties of a single-mode two-photon micromaser when the atoms in a cascade three-level configuration are initially prepared in a mixture of the upper and intermediate states. The mean photon number, trapping state and sub-Poissonian effect are discussed with upper (intermediate)-state population changing from 1(0) to 0(1). These properties are very different from those in a pure two- or one-photon transition process, due to the competition among different transition processes. In particular, the trapping states of nonzero photons are discovered in this system under some conditions, which is contrary to the previous findings.

Key words: two-photon micromaser, trapping states, sub-Poissonian distribution

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
37.10.De (Atom cooling methods) 02.50.Ng (Distribution theory and Monte Carlo studies)