设备无关量子会议密钥协议的基本限制
量子物理
2023-01-13 v2 信息论
数学物理
math.IT
math.MP
摘要
我们给出了设备无关会议密钥协议（DI-CKA）场景中针对量子敌手安全密钥速率的几个一般上界。它们包括由约化纠缠度量给出的界，以及基于多方保密单调量（如多方压缩纠缠度量，我们称之为约化c-压缩纠缠）的界。我们将后一界与基于奇偶Clauser-Horne-Shimony-Holt游戏的会议密钥提取协议的已知下界进行比较。我们还表明，DI-CKA速率与设备相关速率之间的差距继承自设备无关与设备相关密钥速率之间的双边差距，并给出展现严格差距的示例。
关键词
引用
@article{arxiv.2111.02467,
title = {Fundamental limitations on the device-independent quantum conference key agreement},
author = {Karol Horodecki and Marek Winczewski and Siddhartha Das},
journal= {arXiv preprint arXiv:2111.02467},
year = {2023}
}
备注
v1: 15 pages, 2 figures. See also the parallel work by Aby Philip, Eneet Kaur, Peter Bierhorst, and Mark M. Wilde titled "Intrinsic Non-Locality and Device-Independent Conference Key Agreement" appearing on arXiv along with this work. v2: Section IV removed as it was redundant, results unchanged, typos corrected