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Influence of intrinsic decoherence on entanglement teleportation via a Heisenberg XYZ model with different Dzyaloshinskii-Moriya interactions. (English) Zbl 1317.81051

Summary: 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 \(J\) for the \(z\)-component DM system, whereas it is not for the \(x\)-component DM system. The ferromagnetic case is superior to the antiferromagnetic case to restrain decoherence when using the \(x\)-component DM system. The dependencies of entanglement, the output entanglement, and the average fidelity on initial state angle \(\alpha\) all demonstrate periodicity. Moreover, the \(x\)-component DM system can get a high fidelity both in two-qubit and in three-qubit teleportation protocol.

MSC:

81P45 Quantum information, communication, networks (quantum-theoretic aspects)
82B20 Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs arising in equilibrium statistical mechanics
81S22 Open systems, reduced dynamics, master equations, decoherence
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