Coherence-Enhanced Entanglement Induced by a Two-Mode Thermal Field
Yao-Hua Hu, Mao-Fa Fang · Communications in Theoretical Physics · 2010
Considering two identical two-level atoms interacting with two mode thermal field through a nondegerate two-photon process, we study the entanglement dynamics between two atoms when the atomic coherence exists. It shows that the entanglement is dependent on the initial atomic states, and is greatly enhanced due to atomic coherence as compared with the case when the atomic coherence is ignored. The results also show that the entanglement can be controlled by changing the relative phases and the amplitudes of the polarized atoms.