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.
Received: 31 January 1996
Accepted manuscript online:
(Phase conjugation; photorefractive and Kerr effects)
Fund: Project supported by the National Natural Science Foundation of China.
Cite this article:
HUANG YAN-XIA (黄燕霞), GUO GUANG-CAN (郭光灿) A NEW MEASURE FOR THE JAYNES-CUMMINGS MODEL DYNAMICS --- DISTANCE BETWEEN DENSITY OPERATORS 1996 Acta Physica Sinica (Overseas Edition) 5 901
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