Quantum Information Processing

, Volume 10, Issue 1, pp 97–106

Sharing a quantum secret without a trusted party

  • Qin Li
  • Dong Yang Long
  • W. H. Chan
  • Dao Wen Qiu
Article

DOI: 10.1007/s11128-010-0180-3

Cite this article as:
Li, Q., Long, D.Y., Chan, W.H. et al. Quantum Inf Process (2011) 10: 97. doi:10.1007/s11128-010-0180-3

Abstract

In a conventional quantum (k, n) threshold scheme, a trusted party shares a secret quantum state with n participants such that any k of those participants can cooperate to recover the original secret, while fewer than k participants obtain no information about the secret. In this paper we show how to construct a quantum (k, n) threshold scheme without the assistance of a trusted party, who generates and distributes shares among the participants. Instead, each participant chooses his private state and contributes the same to the determination of the final secret quantum state.

Keywords

Quantum secret sharingQuantum cryptographyQuantum information processingQuantum communication

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Qin Li
    • 1
    • 2
  • Dong Yang Long
    • 1
  • W. H. Chan
    • 2
  • Dao Wen Qiu
    • 1
  1. 1.Department of Computer ScienceSun Yat-sen UniversityGuangzhouChina
  2. 2.Department of MathematicsHong Kong Baptist UniversityKowloon, Hong KongChina