Improving teleportation fidelity in structured reservoirs

Seeking flexible methods to control quantum teleportation in open systems is an important task of quantum communication. In this paper, we study how the super-Ohmic, Ohmic and sub-Ohmic reservoirs affect the performance of the teleportation protocol. The results revealed that the structures of the reservoir play an important role in determining quality of teleportation. In the strong coupling regime, especially when there is bound state formatted, the fidelity of teleportation may be improved to some extent during certain time regions by the strong backaction of the non-Markovian memory effects of the reservoir. The physical mechanism responsible for this improvements is determined.