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Entanglement Teleportation Via a Two-qubit Heisenberg Chain under a Nonuniform Magnetic Field

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Abstract

By introducing the nonuniform magnetic field, we investigate the entanglement teleportation via two-qubit Heisenberg chain. We show that for ferromagnetic chain, the opposite direction magnetic field on the two-qubit chain can excite the teleported entanglement C out, while the uniform magnetic field can not do it. The effect of the uniform magnetic field B and the nonuniform magnetic field b on the threshold temperature T c is also plotted. Our study on the average fidelity of this quantum channel system shows that the magnetic field in opposite direction can result in the ideal average fidelity no matter whether the chain is ferromagnetic or antiferromagnetic.

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Authors and Affiliations

  1. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, 116023, People’s Republic of China

    Guo-Hui Yang, Yong-Hong Ma, Di Mei & Ling Zhou

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  1. Guo-Hui Yang
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  2. Yong-Hong Ma
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  3. Di Mei
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  4. Ling Zhou
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Correspondence to Ling Zhou.

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Yang, GH., Ma, YH., Mei, D. et al. Entanglement Teleportation Via a Two-qubit Heisenberg Chain under a Nonuniform Magnetic Field. Int J Theor Phys 47, 1836–1843 (2008). https://doi.org/10.1007/s10773-007-9626-5

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  • DOI: https://doi.org/10.1007/s10773-007-9626-5

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