A new measure for the Jaynes-Cummings model dynamics
Huang Yan-Xia, Guo Guang-Can · Acta Physica Sinica (Overseas Edition) · 1996
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.