中国物理B ›› 1999, Vol. 8 ›› Issue (9): 657-663.doi: 10.1088/1004-423X/8/9/004

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

DISTANCE BETWEEN DENSITY OPERATORS IN MULTIPHOTON PROCESSES

张敬涛, 陈朝阳, 徐至展   

  1. Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:1999-01-26 出版日期:1999-09-20 发布日期:1999-09-20

DISTANCE BETWEEN DENSITY OPERATORS IN MULTIPHOTON PROCESSES

Zhang Jing-tao (张敬涛), Chen Zhao-yang (陈朝阳), Xu Zhi-zhan (徐至展)   

  1. Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:1999-01-26 Online:1999-09-20 Published:1999-09-20

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摘要： In this paper we investigate the distance between density operators in multiphoton processes. We study the distances between the time-evolved states of the atom, of the field, and of the total system and their respective reference states, compare them with the atomic inversion as well as the purity of the field, disclose their corresponding relations in various multiphoton processes. The physical interpretations are given by using a fully quantized Bloch equation in the two-photon process.

Abstract: In this paper we investigate the distance between density operators in multiphoton processes. We study the distances between the time-evolved states of the atom, of the field, and of the total system and their respective reference states, compare them with the atomic inversion as well as the purity of the field, disclose their corresponding relations in various multiphoton processes. The physical interpretations are given by using a fully quantized Bloch equation in the two-photon process.

中图分类号:  (Other multiphoton processes)

  • 32.80.Wr
42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift) 31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)