Finite-time disentanglement induced by single-mode thermal field
Feng Han, Yun‐Jie Xia · Chinese Physics B · 2009
In this paper, we study the entanglement dynamics of atoms locally coupled to a cavity field. By studying two different models within the framework of cavity QED, we show that the so-called atomic entanglement sudden death always occurs if initially the cavity field is in the thermal state, in clear contrast with that in the vacuum state where the same entanglement decay is in infinite time.