论文标题
独立量子键分布的进步
Advances in device-independent quantum key distribution
论文作者
论文摘要
独立于设备的量子密钥分布（DI-QKD）为安全钥匙交换提供了金标准。它不仅允许基于量子力学的信息理论安全性，而且还可以放松对设备进行物理建模的需求，因此从根本上排除了非DI QKD系统易受伤害的许多量子黑客攻击威胁。实际上，DI-QKD非常具有挑战性。它依赖于无漏洞的违反铃铛不平等的行为，这项任务要求高质量的纠缠在遥远的各方之间分配并接近完美的量子测量，这在当前的技术中几乎是无法实现的。尽管如此，最近的理论和实验努力导致了第一个原理证明DI-QKD实施。在本文中，我们通过强调其主要的理论和实验成就，讨论了最近的原理证明，并强调了该领域的现有挑战，从而回顾了DI-QKD的最先进。
Device-independent quantum key distribution (DI-QKD) provides the gold standard for secure key exchange. Not only it allows for information-theoretic security based on quantum mechanics, but it relaxes the need to physically model the devices, hence fundamentally ruling out many quantum hacking threats to which non-DI QKD systems are vulnerable. In practice though, DI-QKD is very challenging. It relies on the loophole-free violation of a Bell inequality, a task that requires high quality entanglement to be distributed between distant parties and close to perfect quantum measurements, which is hardly achievable with current technology. Notwithstanding, recent theoretical and experimental efforts have led to the first proof-of-principle DI-QKD implementations. In this article, we review the state-of-the-art of DI-QKD by highlighting its main theoretical and experimental achievements, discussing the recent proof-of-principle demonstrations, and emphasizing the existing challenges in the field.
