Quantum-state transfer on spin-chain channels with random imperfections

  • D. X. KongEmail author
  • A. M. Wang
Quantum Information


We investigate the quantum-state transfer on spin-chain channels with random imperfections. Through combining the advantages of two known schemes, the dual-rail spin-chain channels [9] and the particular ihhomogenous spin-chain channel [10], we propose a protocol that can avoid the quantum noises introduced by many unnecessary measurements and can enhance the anti-decoherence ability. The results show that our protocol is more efficient to transfer an arbitrary quantum state than the original one. In particular, we discuss the effects of couplings fluctuations and imperfect initialization on both of the improved scheme and original one.


03.67.Hk Quantum communication 05.50.+q Lattice theory and statistics 05.60.Gg Quantum transport 73.21.Hb Quantum wires 


  1. C.H. Bennett, S.J. Wiesner, Phys. Rev. 69, 2881 (1992); C.H. Bennett et al., Phys. Rev. Lett. 70, 1895 (1993) Google Scholar
  2. G.R. Guthörlein, M. Keller, K. Hayasaka, W. Lange, H. Walther, Nature 414, 49 (2001) Google Scholar
  3. D. Leibfried et al., Nature 422, 412 (2003); F. Schmidt-Kaler et al., Nature 422, 408 (2003) Google Scholar
  4. D. Burgarth, Eur. Phys. J. Special Topics 151, 147 (2007) Google Scholar
  5. S. Bose, Phys. Rev. Lett. 91, 207901 (2003) Google Scholar
  6. M. Christandl, N. Datta, A. Ekert, A.J. Landahl, Phys. Rev. Lett. 92, 187902 (2004); M. Christandl, N. Datta, T.C. Dorlas, A. Ekert, A. Kay, A.J. Landahl, Phys. Rev. A 71, 032312 (2005) Google Scholar
  7. C. Facer, J. Twamley, J. Cresser, Phys. Rev. A 77, 012334 (2008); P. Karbach, J. Stolze, Phys. Rev. A 72, 030301(R) (2005); C. Albanese, M. Christandl, N. Datta, A. Ekert, Phys. Rev. Lett. 93, 230502 (2004) Google Scholar
  8. T. Shi, Y. Li, Z. Song, C.-P. Sun, Phys. Rev. A 71, 032309 (2005) Google Scholar
  9. D. Burgarth, S. Bose, Phys. Rev. A 71, 052315 (2005) Google Scholar
  10. A. Wójcik et al., Phys. Rev. A 72, 034303 (2005) Google Scholar
  11. D. Burgarth, S. Bose, New J. Phys. 7, 135 (2005) Google Scholar
  12. D. Burgarth, S. Bose, Phys. Rev. A 73, 062321 (2006) Google Scholar
  13. D. Burgarth, V. Giovannetti, S. Bose, Phys. Rev. A 75, 062327 (2007) Google Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Department of modern physicsUniversity of Science and Technology of ChinaHefeiP.R. China

Personalised recommendations