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理论物理通讯：英文版

Quantum Secret Sharing Using GHZ-Like State

谢朝任, 蔡家纬, 黄宗立

Published Jan 1, 2010• 0 citations
OpenAlex

Abstract

这份报纸论述用象 GHZ 一样状态分享计划的一个简单、新奇的量秘密。象 GHZ 一样状态的特征被用来开发分享计划的量秘密。在有有一样的假设的另外的基于 GHZ 的 QSS 协议的对比，建议协议提供最好的量小点效率。

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With the rapid progress of quantum cryptography, secret sharing has been developed in the quantum setting for achieving a high level of security, which is known as quantum secret sharing (QSS). The first QSS scheme was proposed by Hillery et al. in 1999 [Phys. Rev. A, Vol. 59, p.1829 (1999)] based on entangled Greenberger-Horne-Zeilinger (GHZ) states. However, only 50% of the entangled quantum states are effective for eavesdropping detection and secret splitting in the original scheme. In this paper, we introduce a possible method, called measurement-delay strategy, to improve the qubit efficiency of the GHZ-based QSS scheme. By using this method, the qubit efficiency of the improved QSS scheme can reach 100% for both security detection and secret distribution. The improved QSS scheme can be implemented experimentally based on current technologies.