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理论物理通讯：英文版

Enhanced Multiparty Controlled QSDC Using GHZ State

高士闳, 蔡家纬, 黄宗立

Published Jan 1, 2011• 0 citations
OpenAlex

Abstract

最近，高等。[抉择。Commun。283 (2010 ) 192 ] 指出了那个王等。的多党的控制的量安全直接通讯(CQSDC ) 协议[抉择。Commun。266 (2006 ) 732 ] 有信息漏问题并且建议了一个改进协议。然而在改进协议，由于另外的随机的采样到的介绍避免软弱， qubit 效率被减少。由在王等把基础变化技术介绍给随机的采样。的协议，这研究克服信息漏问题并且提供更好的 qubit 效率。

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最近，高等。[抉择。Commun。283 (2010 ) 192 ] 指出了那个王等。的多党的控制的量安全直接通讯(CQSDC ) 协议[抉择。Commun。266 (2006 ) 732 ] 有信息漏问题并且建议了一个改进协议。然而在改进协议，由于另外的随机的采样到的介绍避免软弱， qubit 效率被减少。由在王等把基础变化技术介绍给随机的采样。的协议，这研究克服信息漏问题并且提供更好的 qubit 效率。
Recently, Gao et al. [Opt. Commun. 283 (2010) 192] pointed out that Wang et al.'s multiparty controlled quantum secure direct communication (CQSDC) protocol [Opt. Commun. 266 (2006) 732] has the information leakage problem and proposed an improved protocol. However, in the improved protocol, due to the introduction of an additional random sampling to avoid the weakness, the qubit efficiency is decreased. By introducing the base changing technique to the random sampling in Wang et al.'s protocol, this study overcomes the information leakage problem and provides a better qubit efficiency.