中国物理B ›› 2005, Vol. 14 ›› Issue (6): 1152-1158.doi: 10.1088/1009-1963/14/6/017

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Influence of atomic motion on squeezing of double-mode field in interaction with a moving V-type three-level atom

赵永芳1, 朱爱东2, 张寿2   

  1. (1)Center for the Condensed-Matter Science and Technology,Harbin Institute of Technology, Harbin 150001, China; (2)Center for the Condensed-Matter Science and Technology,Harbin Institute of Technology, Harbin 150001, China;Department of Physics, College of Science and Engineering,Yanbian University, Yanji 133002, China
  • 收稿日期:2004-10-10 修回日期:2004-12-14 出版日期:2005-05-27 发布日期:2005-05-27

Influence of atomic motion on squeezing of double-mode field in interaction with a moving V-type three-level atom

Zhu Ai-Dong (朱爱东)ab, Zhang Shou (张寿)ab, Zhao Yong-Fang (赵永芳)a   

  1. a Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; b Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002, China
  • Received:2004-10-10 Revised:2004-12-14 Online:2005-05-27 Published:2005-05-27

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摘要： The influences of atomic motion on squeezing of the double-mode field are investigated in the interaction with a moving V-type three level atom by means of the quantum theory and the method of numerical analysis. The results show, on the one hand, when the initial photon field is in non-correlative coherent state of double-mode, only the quadrature U1 is squeezed and the squeezed degree of U1 increases with the increasing of the parameter β which denotes the atomic motion and structure of the field mode. On the other hand, when the initial field is in the vacuum squeezed state of double-mode, the quadrature U2 is squeezed principally and we can obtain a steady squeezed light by choosing an appropriate parameter β.

关键词: atomic motion, V-type three-level atom, squeezing e?ect

Abstract: The influences of atomic motion on squeezing of the double-mode field are investigated in the interaction with a moving V-type three level atom by means of the quantum theory and the method of numerical analysis. The results show, on the one hand, when the initial photon field is in non-correlative coherent state of double-mode, only the quadrature U1 is squeezed and the squeezed degree of U1 increases with the increasing of the parameter β which denotes the atomic motion and structure of the field mode. On the other hand, when the initial field is in the vacuum squeezed state of double-mode, the quadrature U2 is squeezed principally and we can obtain a steady squeezed light by choosing an appropriate parameter β.

Key words: atomic motion, V-type three-level atom, squeezing e?ect

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
32.80.-t (Photoionization and excitation) 03.65.Ge (Solutions of wave equations: bound states)