J4 ›› 2014, Vol. 31 ›› Issue (5): 610-614.

• Quantum Optics • Previous Articles     Next Articles

The evolution of entanglement and the generation of maximally entangled states in the nonlinear Jaynes-Cummings model

ZHAO Jia-qiang, Cao Lian-zhen, Lu Huai-xin   

  1. Shandong Provincial Key Laboratory of Multi-photon Entanglement and Manipulation, Department of Physics and Optoelectronic Engineering, Weifang University, Weifang 261061, China
  • Received:2014-01-20 Revised:2014-02-28 Published:2014-09-28 Online:2014-09-17

Abstract: Using the numerical method, the information entropy and evolution of entanglement of atom and a single mode light field of J-C model in the Kerr medium cavity have been studied. The effect of Kerr on the properties of entangled states has been obtained. The results show that Kerr medium has a strong influence on entanglement property of coupled system. With the appropriate Kerr effect, the maximally entangled quantum state will long remain.

Key words: quantum optics; degree of entanglement; Kerr medium; information entropy