Teleportation of the one-qubit state in decoherence environments

Details Teleportation of the one-qubit state in decoherence environments Teleportation of the one-qubit state in decoherence environments

2011-11-25

arxiv.org/abs/1111.5967v1

Journal of Physics B: Atomic, Molecular and Optical Physics, 2011, 44(2): 025502

Physics

Quantum Physics

17 pages, 10 figures

Scientific paper

10.1088/0953-4075/44/2/025502

We study standard quantum teleportation of one-qubit state for the situation in which the channel is subject to decoherence, and where the evolution of the channel state is ruled by a master equation in the Lindblad form. A detailed calculation reveals that the quality of teleportation is determined by both the entanglement and the purity of the channel state, and only the optimal matching of them ensures the highest fidelity of standard quantum teleportation. Also our results demonstrated that the decoherence induces distortion of the Bloch sphere for the output state with different rates in different directions, which implies that different input states will be teleported with different fidelities.

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