Communications in Theoretical Physics
Improved Multipartite Quantum Secret Sharing Protocol Using Preshared Greenberger—Horne—Zeilinger States
Deng Xie, Ming-Yong Ye, Xinghua Li
Abstract
Inspired by the protocol presented by Bagherinezhad and Karimipour [ Phys. Rev. A 67 (2003) 044302 ], which will be shown to be insecure, we present a multipartite quantum secret sharing protocol using reusable Greenberger—Horne—Zeilinger (GHZ) states. This protocol is robust against eavesdropping and could be used for the circumstance of many parties.