Entanglement dynamics of a double two-photon Jaynes–Cummings model with Kerr-like medium
Ouyang Xi-Cheng, Mao-Fa Fang, Guodong Kang, Deng Xiao-Juan, Huang Li-Yuan · Chinese Physics B · 2010
In this paper, the entanglement dynamics of a double two-photon Jaynes–Cummings model with Kerr-like medium is investigated. It is shown that initial entanglement has an interesting subsequent time evolution, including the so-called entanglement sudden death effect. It is also shown analytically that the Kerr-like medium can repress entanglement sudden death and enhance the degree of atom-atom entanglement. A more interesting fact is that the Kerr effect is more obvious when each of the two cavities with have the Kerr-like medium than only one of them with the Kerr-like medium.