Linear entropies in the Jaynes-Cummings model with intensity-dependent coupling in a phase-damped cavity
Zhou Qing-Chun (周青春)ab, Zhu Shi-Ning (祝世宁)b
a Department of Mathematics and Physics, Jiansu University of Science and Technology, Zhenjiang 212003, China; b Department of Physics, Nanjing University, Nanjing 210093, China
Abstract We investigate the evolution of a quantum system described by the Jaynes-Cummings model with an arbitrary form of intensity-dependent coupling by displaying the linear entropies of the atom, field and atom-field system in the large detuning approximation. The cavity field is assumed to be coupled to a reservoir with a phase-damping coupling. The effects of cavity phase damping on the entanglement and coherence loss of such a system are studied.
Received: 31 August 2004
Revised: 14 December 2004
Accepted manuscript online:
Fund: Project supported by the National Science Foundation of China (Grant No. 90201008) and the Science Foundation of Jiangsu Province, China (Contract No. BK2002202).
Cite this article:
Zhou Qing-Chun (周青春), Zhu Shi-Ning (祝世宁) Linear entropies in the Jaynes-Cummings model with intensity-dependent coupling in a phase-damped cavity 2005 Chinese Physics 14 1147
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