中国物理B ›› 1996, Vol. 5 ›› Issue (12): 901-910.doi: 10.1088/1004-423X/5/12/003

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A NEW MEASURE FOR THE JAYNES-CUMMINGS MODEL DYNAMICS DISTANCE BETWEEN DENSITY OPERATORS

黄燕霞, 郭光灿   

  1. Department of Physics, University of Science and Technology of China, Center of Nonlinear Science, Hefei 230026, China
  • 收稿日期:1996-01-31 出版日期:1996-12-20 发布日期:1996-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

A NEW MEASURE FOR THE JAYNES-CUMMINGS MODEL DYNAMICS --- DISTANCE BETWEEN DENSITY OPERATORS

HUANG YAN-XIA (黄燕霞), GUO GUANG-CAN (郭光灿)   

  1. Department of Physics, University of Science and Technology of China, Center of Nonlinear Science, Hefei 230026, China
  • Received:1996-01-31 Online:1996-12-20 Published:1996-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： We use the distance between density operators to study the dynamical evolution of the Jaynes-Cummings model with an additional Kerr medium, and to compare the result with the corresponding von Neumann entropy. We have shown that the distance between density operators can provide more detailed information about the dynamical behavior of the quantum system than von Neumann entropy.

Abstract: We use the distance between density operators to study the dynamical evolution of the Jaynes-Cummings model with an additional Kerr medium, and to compare the result with the corresponding von Neumann entropy. We have shown that the distance between density operators can provide more detailed information about the dynamical behavior of the quantum system than von Neumann entropy.

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

  • 42.50.Dv
37.10.Vz (Mechanical effects of light on atoms, molecules, and ions) 42.65.Hw (Phase conjugation; photorefractive and Kerr effects)