论文标题
来自不同量子发射器的两个光子干扰的奇异频谱分析
Singular Spectrum Analysis of Two Photon Interference from Distinct Quantum Emitters
论文作者
论文摘要
两光子干扰是许多量子光子设备的功能。它也是测试不同光子不可区分性的突出工具。但是，随着它们的时间光谱曲线变得越来越参与，提取相关参数，最重要的是中心频率差异，可能会开始遇到困难。在一种参数方法中，这些方法源于对详尽的模型和有限的计数统计数据的需求。在这里，我们讨论了一种解决依赖半参数方法的频率分离评估的解决方案。在检查其光谱含量之前，通过奇异光谱分析对两个独立固态发射器的两个光子的量子干扰模式的时间痕迹进行了预处理。这种方法允许从信封和噪声中挑选出相关的振荡，而无需诉诸拟合。这为量子发射器的强大有效的在线监视开辟了道路。
Two-photon interference underlies the functioning of many quantum photonics devices. It also serves as the prominent tool for testing the indistinguishability of distinct photons. However, as their time-spectral profile becomes more involved, extracting relevant parameters, foremost the central frequency difference, may start suffering difficulties. In a parametric approach, these arise from the need for an exhaustive model combined with limited count statistics. Here we discuss a solution to curtail these effects on the evaluation of frequency separation relying on a semiparametric method. The time trace of the quantum interference pattern of two photons from two independent solid-state emitters is preprocessed by means of singular spectral analysis before inspecting its spectral content. This approach allows to single out the relevant oscillations from both the envelope and the noise, without resorting to fitting. This opens the way for robust and efficient on-line monitoring of quantum emitters.
