arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0302156quant-ph
收藏

基于违背贝尔不等式的秘密共享安全性的统一判据

Unified criterion for security of secret sharing in terms of violation of Bell inequality

Aditi Sen De, Ujjwal Sen, Marek Zukowski

摘要:

在秘密共享协议中,一个秘密被分配给多个参与者,因此,如果不考虑其中的任何一个参与者,其余的参与者都不具有完整的信息。在秘密共享的状态下,强多量子比特相关性已经被提出作为这种协议对窃听者的个人攻击的安全性的标准。然而,我们表明,具有弱多量子比特相关性的状态也可以用于安全的秘密共享。我们的状态具有弱的多量子比特相关性,从违反局域实在论的角度来看,也表明其高阶相关性由较低的描述。然后,我们提出了一个统一的标准,安全的秘密共享违反本地现实主义,它的作品时,秘密共享状态是格林伯格-霍恩-蔡林格状态(具有强多量子位相关性),以及状态的不同类(弱多量子位相关性)。

英文摘要:

In secret sharing protocols, a secret is to be distributed among several partners so that leaving out any number of them, the rest do not have the complete information. Strong multiqubit correlations in the state by which secret sharing is carried out, had been proposed as a criterion for security of such protocols against individual attacks by an eavesdropper. However we show that states with weak multiqubit correlations can also be used for secure secret sharing. That our state has weak multiqubit correlations, is shown from the perspective of violation of local realism, and also by showing that its higher order correlations are described by lower ones. We then present a unified criterion for security of secret sharing in terms of violation of local realism, which works when the secret sharing state is the Greenberger-Horne-Zeilinger state (with strong multiqubit correlations), as well as states of a different class (with weak multiqubit correlations).

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。

↑