AI 中文总结
该研究针对单侧设备无关量子密钥分发场景，开发NPA层级扩展等工具推导安全边界，分析多种协议性能，发现表征方选择对密钥率有显著影响，提供了密钥率计算的通用工具箱。
AI 中文摘要
单侧设备无关量子密钥分发的核心特征是其非对称信任模型，仅对其中一方进行表征。该场景在通过表征设备可实现的高密钥率与完全设备无关的安全性之间，形成了一种有趣的中间状态。为此，我们开发了NPA层级的两种扩展形式并进行比较，基于广义熵积累定理推导了针对具有任意设备记忆的一般攻击的有限尺寸安全边界。随后，我们研究了多种协议的性能：带损耗和无损耗的BB84协议、qutrit相互无偏基协议，以及基于CHSH和$I_{3322}$等贝尔不等式的协议。我们发现，选择对哪一方进行表征会对密钥率产生显著影响，且令人惊讶的是不存在统一的排序。因此，我们的工作为单侧设备无关QKD协议的密钥率计算提供了一个通用工具箱。
英文摘要
The defining feature of one-sided device-independent quantum key distribution is its asymmetric trust model in which only one party is characterized. This scenario sets an interesting middle ground between high key rates achievable by characterizing devices and the security of full device-independence. Here, we provide new tools, methods, and benchmarks for calculating key rates in this setting. To achieve this, we develop and compare two extensions of the NPA hierarchy and derive finite-size security bounds against general attacks with arbitrary device memory. The latter is based on the Generalized Entropy Accumulation Theorem. We then investigate the performance of various protocols: the BB84 protocol both with and without losses, a qutrit mutually unbiased bases protocol, and protocols based on Bell inequalties such as CHSH and $I_{3322}$. We find that the choice of which party is characterized can strongly affects the key rate, surprisingly without a universal ordering. Our work thus offers a general toolbox for calculating key rates for one-sided device-independent QKD protocols.
Comments59 pages, 8 figures
