论文标题
有效的室温分子单光子源用于量子钥匙分布
Efficient room-temperature molecular single-photon sources for quantum key distribution
论文作者
论文摘要
量子密钥分布（QKD）允许以信息理论的安全方式在多个用户之间分布加密密钥，从而利用量子物理。虽然当前的QKD系统主要基于衰减的激光脉冲，但确定性的单光子源可以在秘密关键率（SKR）和安全性方面具有具体的优势，并且由于多光子事件的可能性可忽略不计。在这里，我们介绍并演示了概念验证QKD系统，该系统利用基于分子的单光子源在室温下运行，并在785nm发射。我们的解决方案估计为0.5 Mbps，为量子通信协议的室温单光子源铺平了道路。
Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way, exploiting quantum physics. While current QKD systems are mainly based on attenuated laser pulses, deterministic single-photon sources could give concrete advantages in terms of secret key rate (SKR) and security owing to the negligible probability of multi-photon events. Here, we introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm. With an estimated SKR of 0.5 Mbps, our solution paves the way for room-temperature single-photon sources for quantum communication protocols.
