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The European Physical Journal D

, Volume 47, Issue 2, pp 227–231 | Cite as

Quantum teleportation via a two-qubit Heisenberg XXZ chain – effects of anisotropy and magnetic field

  • Y. Zhou
  • G.-F. ZhangEmail author
Quantum Optics and Quantum Information

Abstract.

We study quantum teleportation via a two-qubit Heisenberg XXZ chain under an inhomogeneous magnetic field. We first consider entanglement teleportation, and then focus on the teleportation fidelity under different conditions. The effects of anisotropy and the magnetic field, both uniform and inhomogeneous, are discussed. We also find that, though entanglement teleportation does require an entangled quantum channel, a nonzero critical value of minimum entanglement is not always necessary.

PACS.

03.67.Lx Quantum computation 03.67.Hk Quantum communication 75.10.Jm Quantized spin models 

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References

  1. C.H. Bennett et al., Phys. Rev. Lett. 70, 1895 (1993) CrossRefADSMathSciNetGoogle Scholar
  2. Y. Yeo, Phys. Rev. A 66, 062312 (2002) CrossRefADSGoogle Scholar
  3. Y. Yeo et al., J. Phys. A 38, 3235 (2005) CrossRefMathSciNetGoogle Scholar
  4. G.-F. Zhang, Phys. Rev. A 75, 034304 (2007) CrossRefADSGoogle Scholar
  5. U. Glaser, H. Büttner, H. Fehske, Phys. Rev. A 68, 032318 (2003) CrossRefADSGoogle Scholar
  6. P.M. Platzman, M.I. Dykman, Science 284, 1967 (1999) CrossRefGoogle Scholar
  7. L.F. Santos, Phys. Rev. A 67, 062306 (2003) CrossRefADSGoogle Scholar
  8. G.-F. Zhang, S.-S. Li, Phys. Rev. A 72, 034302 (2005) CrossRefADSGoogle Scholar
  9. G. Bowen, S. Bose, Phys. Rev. Lett. 87, 267901 (2001) CrossRefADSGoogle Scholar
  10. S. Hill, W.K. Wootters, Phys. Rev. Lett. 78, 5022 (1997) CrossRefADSGoogle Scholar
  11. J. Lee, M.S. Kim, Phys. Rev. Lett. 84, 4236 (2000) CrossRefADSGoogle Scholar
  12. R. Jozsa, J. Mod. Opt. 41, 2315 (1994) zbMATHCrossRefADSMathSciNetGoogle Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of SciencesBeijingP.R. China
  2. 2.Department of PhysicsSchool of Sciences, Beijing University of Aeronautics & AstronauticsBeijingP.R. China

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