Abstract Efficient generation of single photons is one of the key challenges of building photonic quantum technology, such as quantum computers and long-distance quantum networks. Photon source multiplexing—where successful pair generation is heralded by the detection of one of the photons, and its partner is routed to a single mode output—has long been known to offer a concrete solution, with output probability tending toward unity as loss is reduced. Here, we present a temporally multiplexed integrated single photon source based on a silicon waveguide and a low-loss fibre switch and loop architecture, which achieves enhancement of the single photon output probability of 4.5 ± 0.5, while retaining g (2)(0) = 0.01.

中文翻译：

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通过时间复用增强硅波导单光子源

摘要 高效生成单光子是构建光子量子技术（如量子计算机和长距离量子网络）的关键挑战之一。光子源多路复用——其中一个光子的检测预示着成功的对生成，其伙伴被路由到单模输出——长期以来一直被认为提供了一种具体的解决方案，随着损失的减少，输出概率趋于一致. 在这里，我们提出了一种基于硅波导和低损耗光纤开关和环路架构的时间复用集成单光子源，它实现了 4.5 ± 0.5 的单光子输出概率的增强，同时保留了 g (2)(0) = 0.01。