Traditionally, the study of quantum key distribution (QKD) assumes an omnipotent eavesdropper that is only limited by the laws of physics. However, this is not the case for specific application scenarios such as the QKD over a free-space link. In this invited paper, we introduce the geometrical optics restricted eavesdropping model for secret key distillation security analysis and apply to a few scenarios common in satellite-to-satellite applications.

中文翻译：

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星对星密钥蒸馏的几何光学受限窃听分析


传统上，量子密钥分发（QKD）的研究假设有一个全能的窃听者，仅受物理定律的限制。然而，对于诸如自由空间链路上的 QKD 之类的特定应用场景而言，情况并非如此。在这篇特邀论文中，我们介绍了用于密钥蒸馏安全分析的几何光学受限窃听模型，并将其应用于卫星到卫星应用中常见的一些场景。