论文标题
连续变量量子密钥分布的组合安全性：有线和无线网络中的信任水平和实际关键率
Composable security for continuous variable quantum key distribution: Trust levels and practical key rates in wired and wireless networks
论文作者
论文摘要
连续变量（CV）量子密钥分布（QKD）为安全量子通信提供了一个强大的设置，这要归功于使用室温的现成光学设备，并且有可能达到比标准离散可变的对应物更高的速率。在这项工作中，我们提供了一个通用框架，用于研究CV-QKD的可组合有限尺寸的安全性，并在各个级别的信任下对当事方所经历的损失和噪音的各种信任下的高斯相干国家协议。我们的研究认为有线（即基于纤维）和无线（即自由空间）量子通信。在后一种情况下，我们表明，在具有固定设备和移动设备的安全量子网络中，短距离光学无线（LIFI）可以实现高关键率。最后，我们将调查扩展到微波无线（WIFI），讨论了CV-QKD对于非常短的应用程序的安全性和可行性。
Continuous variable (CV) quantum key distribution (QKD) provides a powerful setting for secure quantum communications, thanks to the use of room-temperature off-the-shelf optical devices and the potential to reach much higher rates than the standard discrete-variable counterpart. In this work, we provide a general framework for studying the composable finite-size security of CV-QKD with Gaussian-modulated coherent-state protocols under various levels of trust for the loss and noise experienced by the parties. Our study considers both wired (i.e., fiber-based) and wireless (i.e., free-space) quantum communications. In the latter case, we show that high key rates are achievable for short-range optical wireless (LiFi) in secure quantum networks with both fixed and mobile devices. Finally, we extend our investigation to microwave wireless (WiFi) discussing security and feasibility of CV-QKD for very short-range applications.
