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We investigate the characteristics of entanglement teleportation of a two-qubit and three-qubit Heisenberg XYZ model under different Dzyaloshinskii–Moriya (DM) interactions with intrinsic decoherence taken into account. The two-qubit results reveal that the dynamics of entanglement is a symmetric function about the coupling coefficient $$J$$ J for the $$z$$ z -component DM system, whereas it is not for the $$x$$ x -component DM system. The ferromagnetic case is superior to the antiferromagnetic case to restrain decoherence when using the $$x$$ x -component DM system. The dependencies of entanglement, the output entanglement, and the average fidelity on initial state angle $$\alpha $$ α all demonstrate periodicity. Moreover, the $$x$$ x -component DM system can get a high fidelity both in two-qubit and in three-qubit teleportation protocol.
Quantum Information Processing – Springer Journals
Published: Apr 2, 2015
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