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Robust multiparty quantum secret key sharing over two collective-noise channels

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  • Zhang, Zhan-jun

Abstract

Based on a polarization-based quantum key distribution protocol over a collective-noise channel [Phys. Rev. Lett. 92 (2004) 017901], a robust (n,n)-threshold scheme of multiparty quantum secret sharing of key over two collective-noise channels (i.e., the collective dephasing channel and the collective rotating channel) is proposed. In this scheme the sharer entirety can establish a joint key with the message sender only if all the sharers collaborate together. Since Bell singlets are enough for use and only single-photon polarization needs to be identified, this scheme is feasible according to the present-day technique.

Suggested Citation

  • Zhang, Zhan-jun, 2006. "Robust multiparty quantum secret key sharing over two collective-noise channels," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 361(1), pages 233-238.
    • Handle: RePEc:eee:phsmap:v:361:y:2006:i:1:p:233-238
    DOI: 10.1016/j.physa.2005.07.005
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