Tunable Entanglement Sudden Death and Birth in Cavity QED with Nonlinear Kerr-Like Medium |
| Q.-L. He and J.-B. Xu
Zhejiang Institute of Modern Physics and Physics Department, Zhejiang University, Hangzhou 310027, People's Republic of China |
| Received: January 6, 2011; Revised version: April 11, 2011; In final form: May 16, 2011 |
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| The influence of nonlinear Kerr-like medium on the phenomenon of entanglement sudden death and birth in a double Jaynes-Cummings model is investigated. It is shown that the entanglement sudden death and birth phenomenon may appear in this system and the duration of entanglement sudden death and birth can be controlled by the nonlinear Kerr-like medium. Particularly, the phenomenon of entanglement sudden death and birth disappears one after another if we increase the value of the Kerr coefficient χ continuously, and all disappears if the value of the Kerr coefficient χ is large enough. |
| DOI: 10.12693/APhysPolA.120.390 PACS numbers: 03.65.Ud, 03.67.-a, 03.67.Mn |