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arXiv 2507.02473quant-ph
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基于受限非本地性的Popescu-Rohrlich盒的保密密钥分配

Secure key distribution based on Popescu-Rohrlich box fraction of dimensionally restricted nonlocality

National Center for Theoretical Sciences, National Taiwan University(台湾大学国家理论科学中心)

Chellasamy Jebarathinam

AI总结:

本文提出了一种非线性见证,用于检测受限非本地性,并研究了受限非本地性Popescu-Rohrlich盒的性质,证明其可作为安全量子密钥分配的资源,即使未验证纠缠。

摘要:

在双参与者的贝尔情景中,引入了非线性见证以检测受限非本地性。随后引入并研究了受限非本地性Popescu-Rohrlich盒,利用上述见证和非线性关联度量。该Popescu-Rohrlich盒分数在某些贝尔本地关联中也非零。证明任何Alice和Bob共享的具有受限非本地性的非信号关联都对第三方Eve具有保密性,Eve也受限。在此背景下,对于特定的贝尔情景,证明受限非本地性Popescu-Rohrlich盒分数可作为安全量子密钥分配的资源,即使未验证纠缠。

英文摘要:

For the bipartite Bell scenario with two inputs and two outputs, a nonlinear witness of dimensionally restricted nonlocality is introduced. Popescu-Rohrlich (PR) box fraction of dimensionally restricted nonlocality is then introduced and studied using the aforementioned witness and a nonlinear measure of correlations. This PR box fraction is also nonzero for certain Bell-local correlations. It is shown that any nonsignaling correlation shared by Alice and Bob that has dimensionally restricted nonlocality contains secrecy against any third party, Eve, who is also dimensionally restricted. In this context, for the specific Bell scenario considered, it is demonstrated that the PR box fraction of dimensionally restricted nonlocality can be used as a resource for secure quantum key distribution, even if entanglement is not certified.

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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