中国物理B ›› 1999, Vol. 8 ›› Issue (4): 261-268.doi: 10.1088/1004-423X/8/4/003

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EVOLUTION OF ENTROPY IN THE NONLINEAR JAYNES-CUMMINGS MODEL

童朝阳1, 张敬涛2, 陈朝阳2   

  1. (1)Department of Physics, Hunan Normal University, Hunan 410006, China; (2)Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences Shanghai 201800, China
  • 收稿日期:1998-07-23 修回日期:1998-12-07 出版日期:1999-04-15 发布日期:1999-04-20

EVOLUTION OF ENTROPY IN THE NONLINEAR JAYNES-CUMMINGS MODEL

Zhang Jing-tao (张敬涛)a, Chen Zhao-yang (陈朝阳)a, Tong Zhao-yang (童朝阳)b   

  1. a Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences Shanghai 201800, China; b Department of Physics, Hunan Normal University, Hunan 410006, China
  • Received:1998-07-23 Revised:1998-12-07 Online:1999-04-15 Published:1999-04-20

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摘要： In this paper we study the correlation between the external and the internal state of the trapped atoms by means of the nonlinear Jaynes-Cummings Hamiltonian, in which we pay special attention to the influence of the nonlinearity. We find that the correlation is reflected by the entropy of the vibration mode, which is strongly affected by the nonlinearity. The nonlinearity, embodied by the nonlinear Rabi frequency, exhitits various effects, of which the most important feature is the appearance of the second local minimum value of the entropy in each collapse-revival cycle of the atomic inversion.

Abstract: In this paper we study the correlation between the external and the internal state of the trapped atoms by means of the nonlinear Jaynes-Cummings Hamiltonian, in which we pay special attention to the influence of the nonlinearity. We find that the correlation is reflected by the entropy of the vibration mode, which is strongly affected by the nonlinearity. The nonlinearity, embodied by the nonlinear Rabi frequency, exhitits various effects, of which the most important feature is the appearance of the second local minimum value of the entropy in each collapse-revival cycle of the atomic inversion.

中图分类号:  (Atom cooling methods)

  • 37.10.De
42.65.-k (Nonlinear optics) 42.50.-p (Quantum optics)