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arXiv 2106.06337quant-ph
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量子导引作为安全三方量子态共享的资源

Quantum steering as a resource for secure tripartite Quantum State Sharing

Cailean Wilkinson, Matthew Thornton, Natalia Korolkova

AI总结:

针对三方均可能不诚实的量子态共享协议,本文证明量子导引是保障安全共享与重构的必要资源,并给出共享任意单模高斯秘密所需的导引水平以实现资源最优利用。

摘要:

量子态共享(QSS)是一种协议,通过它,一个(秘密)量子态可以被安全地分割、在多个可能不诚实的参与者之间共享并重构。关键在于,每个参与者都被假定为不诚实,因此QSS要求只有协作的授权参与者子集才能访问原始秘密态;任何不诚实的未授权共谋都无法重构它。我们分析了一个涉及三个不受信任参与者的QSS协议,并证明量子导引是使协议能够安全进行所需的资源。我们分析了共享任意单模高斯秘密所需的导引水平,从而能够以最优的资源利用方式共享这些态。

英文摘要:

Quantum State Sharing (QSS) is a protocol by which a (secret) quantum state may be securely split, shared between multiple potentially dishonest players, and reconstructed. Crucially the players are each assumed to be dishonest, and so QSS requires that only a collaborating authorised subset of players can access the original secret state; any dishonest unauthorised conspiracy cannot reconstruct it. We analyse a QSS protocol involving three untrusted players and demonstrate that quantum steering is the required resource which enables the protocol to proceed securely. We analyse the level of steering required to share any single-mode Gaussian secret which enables the states to be shared with the optimal use of resources.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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