论文标题
自由空间量子钥匙分布带有来自六角硼的缺陷的单光子
Free-Space Quantum Key Distribution with Single Photons from Defects in Hexagonal Boron Nitride
论文作者
论文摘要
我们提出了自由空间量子键分布（QKD）的概念验证证明，其单个光子是由六角形硝化硼（HBN）中孤立缺陷产生的。在室温下以10％亮度运行的来源已集成到B92协议中，并以1 MHz时钟速率达到了238 bps的安全密钥（SKR），量子位错误率（QBER）为8.95％。还研究了检测光子的时间过滤对QKD参数性能的影响。我们认为，我们的结果将加快改善HBN光学活性缺陷及其在高性能实用QKD系统中的性能方面的工作。
We present a proof-of-concept demonstration of free-space quantum key distribution (QKD) with single photons generated from an isolated defect in hexagonal boron nitride (hBN). The source, operating at room temperature with a 10% brightness, is integrated into a B92 protocol and a secure key rate (SKR) of 238 bps and a quantum bit error rate (QBER) of 8.95% are achieved with 1 MHz clock rate. The effect of temporal filtering of detected photons on the performance of QKD parameters is also studied. We believe that our results will accelerate the work on improving the performance of optically active defects in hBN and their use in high-performance practical QKD systems.
