Two atoms in dissipative cavities in dispersive limit: entanglement sudden death and long-lived entanglement

摘要

We investigate the entanglement dynamics and coherence of two two-level atomsinteracting with two coherent fields of two spatially separated and dissipativecavities. It is in particular shown that entanglement sudden death is obtainedwithin a short interacting time. However, after a long interaction time along-lived entanglement is shown, that is, the initial entanglement of twoatoms could be partially preserved. In addition, the coherence of the two atomswill not be lost during the evolution.