A Novel Multiparty Quantum Secret Sharing Scheme of Secure Direct Communication Based on Bell States and Bell Measurements  

作　　者：SHI Run-Hua HUANG Liu-Sheng YANG Wei ZHONG Hong 石润华;黄刘生;杨威;仲红(National High Performance Computing Center at Hefei,Department of Computer Science and Technology,University of Science and Technology of China,Hefei 230027;School of Computer Science and Technology,Anhui University,Hefei 230039;Suzhou Institute for Advanced Study,University of Science and Technology of China,Suzhou 215123)

机构地区：[1]National High Performance Computing Center at Hefei,Department of Computer Science and Technology,University of Science and Technology of China,Hefei 230027 [2]School of Computer Science and Technology,Anhui University,Hefei 230039 [3]Suzhou Institute for Advanced Study,University of Science and Technology of China,Suzhou 215123

出　　处：《Chinese Physics Letters》2011年第5期22-25,共4页中国物理快报（英文版）

基　　金：Supported by the Key Project of the National Natural Science Foundation of China(No 90818005);the Research Program of Education Department of Anhui Province(No KJ2010A009);the 211 Project of Anhui University.

摘　　要：We present a novel quantum secret sharing scheme of secure direct communication and analyze its security.This scheme takes Einstein-Podolsky-Rosen(EPR)pairs in Bell states as quantum resources.In order to obtain thedirect communication message,all agents only need to perform Bell measurements,not to perform any local unitary operation.The total efficiency in this scheme approaches 100%as the classical information exchanged is unnecessary except for the eavesdropping checks.

关 键 词：SCHEME QUANTUM UNITARY 

分 类 号：O41[理学—理论物理]