中国物理B ›› 1996, Vol. 5 ›› Issue (12): 901-910.doi: 10.1088/1004-423X/5/12/003
黄燕霞, 郭光灿
HUANG YAN-XIA (黄燕霞), GUO GUANG-CAN (郭光灿)
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.
中图分类号: (Quantum state engineering and measurements)