Targeting at the realization of scalable photonic quantum technologies, the generation of many photons, their propagation in large optical networks, and a subsequent detection and analysis of sophisticated quantum correlations are essential for the understanding of macroscopic quantum systems. In this experimental contribution, we explore the joint operation of all mentioned ingredients. We benchmark our time-multiplexing framework that includes a high-performance source of multiphoton states and a large multiplexing network, together with unique detectors with high photon-number resolution, readily available for distributing quantum light and measuring complex quantum correlations. Using an adaptive approach that employs flexible time bins, rather than static ones, we successfully verify high-order nonclassical correlations of many photons distributed over many modes. By exploiting the symmetry of our system and using powerful analysis tools, we can analyze correlations that would be inaccessible by classical means otherwise. In particular, we produce on the order of ten photons and distribute them over 64 modes. Nonclassicality is verified with correlation functions up to the 128th order and statistical significances of up to 20 standard deviations.

中文翻译：

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可扩展光子量子系统的统计基准

旨在实现可扩展的光子量子技术，许多光子的产生，它们在大型光网络中的传播以及随后对复杂量子相关性的检测和分析对于理解宏观量子系统至关重要。在这项实验性贡献中，我们探索了所有提及成分的联合操作。我们对我们的时分复用框架进行了基准测试，该框架包括一个高性能的多光子状态源和一个大型的多路复用网络，以及具有高光子数分辨率的独特检测器，可轻松用于分配量子光和测量复杂的量子相关性。使用采用灵活时间段而不是静态时间段的自适应方法，我们成功地验证了分布在许多模式下的许多光子的高阶非经典相关性。通过利用系统的对称性并使用功能强大的分析工具，我们可以分析传统方式无法访问的相关性。特别是，我们产生约10个光子，并将它们分布在64个模式中。使用高达128阶的相关函数和高达20个标准差的统计显着性来验证非经典性。