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Chinese Physics C> 2013, Vol. 37> Issue(11) : 113102 DOI: 10.1088/1674-1137/37/11/113102

Effects of inhomogeneous magnetic fields and different Dzyaloshinskii-Moriya interaction on entanglement and teleportation in a two-qubit Heisenberg XY Z chain

  • In this paper we calculate the thermal entanglement and teleportation in a two-qubit Heisenberg XYZ chain with the different Dzyaloshinskii-Moriya interaction and inhomogeneous magnetic fields. The analytical expressions of the concurrence and the average fidelity are obtained for this model. We have shown that the quantum phase transition occurs in the system and the quantum phase transition point depends on the inhomogeneity of magnetic fields. We compare the x-component Dzyaloshinskii-Moriya interaction with the z-component Dzyaloshinskii-Moriya interaction on the effects of quantum teleportation. It is found that we can take Dzyaloshinskii-Moriya interaction as one of the effective control parameters for the teleportation manipulation.
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QIN Meng, WANG Xiao, LI Yan-Biao, BAI Zhong and LIN Shang-Jin. Effects of inhomogeneous magnetic fields and different Dzyaloshinskii-Moriya interaction on entanglement and teleportation in a two-qubit Heisenberg XY Z chain[J]. Chinese Physics C, 2013, 37(11): 113102. doi: 10.1088/1674-1137/37/11/113102
QIN Meng, WANG Xiao, LI Yan-Biao, BAI Zhong and LIN Shang-Jin. Effects of inhomogeneous magnetic fields and different Dzyaloshinskii-Moriya interaction on entanglement and teleportation in a two-qubit Heisenberg XY Z chain[J]. Chinese Physics C, 2013, 37(11): 113102.  doi: 10.1088/1674-1137/37/11/113102 shu
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Received: 2013-01-04
Revised: 2013-03-04
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Effects of inhomogeneous magnetic fields and different Dzyaloshinskii-Moriya interaction on entanglement and teleportation in a two-qubit Heisenberg XY Z chain

    Corresponding author: QIN Meng,
  • Received Date: 2013-01-04
  • Accepted Date: 2013-03-04
  • Available Online: 2013-11-05

Abstract: In this paper we calculate the thermal entanglement and teleportation in a two-qubit Heisenberg XYZ chain with the different Dzyaloshinskii-Moriya interaction and inhomogeneous magnetic fields. The analytical expressions of the concurrence and the average fidelity are obtained for this model. We have shown that the quantum phase transition occurs in the system and the quantum phase transition point depends on the inhomogeneity of magnetic fields. We compare the x-component Dzyaloshinskii-Moriya interaction with the z-component Dzyaloshinskii-Moriya interaction on the effects of quantum teleportation. It is found that we can take Dzyaloshinskii-Moriya interaction as one of the effective control parameters for the teleportation manipulation.

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