ENTANGLEMENT TRAPPING AND SUDDEN DEATH IN A COMMON BAND GAP
Feng Han, Minghua Zhang · International Journal of Quantum Information · 2011
Using the pseudomode method, we study the exact entanglement dynamics of two atoms in a common band gap. In order to understand the role played by the common band gap we compare our results with the case of two independent band gap model. We demonstrate that the parameter region at which the entanglement sudden death occurs is smaller than the independent band gap model. Moreover, the atomic entanglement trapping can also be achieved in the common band gap model, and the value of entanglement trapping is larger in the common band gap case than in the independent band gap case.