J4 ›› 2014, Vol. 31 ›› Issue (5): 605-609.

• Quantum Optics • Previous Articles     Next Articles

Quantum secret sharing protocol based on W state

LIU Xiao-qing, YU Zhen-bo   

  1. Department of Physics, Nanchang University, Nanchang 330031, China
  • Received:2013-09-30 Revised:2013-11-22 Published:2014-09-28 Online:2014-09-17

Abstract: Based on the non-locality entanglement correlation of the W state, a quantum secret sharing protocol is proposed by utilizing the quantum teleportation. In the proposed protocol, Alice prepares a three-particle W state, and sends any two-particle of the W state to Bob1 and Bob2, respectively, then performs Bell bases joint measurement on her own particles; according to the Alice's measurement result, Bob1 and Bob2 can jointly obtain the secret information by performing the corresponding local operations. What’s more, the security of the proposed protocol is analyzed in detail. It is shown that the proposed protocol can resist many attacks, such as the intercept-resend attack, the entanglement-and-measure attack, etc.

Key words: quantum optics; W state; quantum secret sharing; quantum cryptography; quantum teleportation