论文标题
Hong-ou-mandel干扰不完美的单光子源
Hong-Ou-Mandel Interference with Imperfect Single Photon Sources
论文作者
论文摘要
Hong-ou-mandel干扰是光量子技术的基石。我们在理论和实验上探索单个光子源多余的多光子成分的性质如何影响干扰可见性。我们将方法应用于量子点单光子源，以访问单光子组件的平均波袋重叠 - 一种重要的度量，以了解当前源的局限性。我们发现，迄今为止，多光子事件的影响已经被低估了，并且纯dephasing的影响甚至比以前预期的还要温和。
Hong-Ou-Mandel interference is a cornerstone of optical quantum technologies. We explore both theoretically and experimentally how the nature of unwanted multi-photon components of single photon sources affect the interference visibility. We apply our approach to quantum dot single photon sources in order to access the mean wavepacket overlap of the single-photon component - an important metric to understand the limitations of current sources. We find that the impact of multi-photon events has thus far been underestimated, and that the effect of pure dephasing is even milder than previously expected.
