Abstract Topological photonics has emerged as a novel paradigm for the design of electromagnetic systems from microwaves to nanophotonics. Studies to date have largely focused on the demonstration of fundamental concepts, such as nonreciprocity and waveguiding protected against fabrication disorder. Moving forward, there is a pressing need to identify applications where topological designs can lead to useful improvements in device performance. Here, we review applications of topological photonics to ring resonator–based systems, including one- and two-dimensional resonator arrays, and dynamically modulated resonators. We evaluate potential applications such as quantum light generation, disorder-robust delay lines, and optical isolation, as well as future research directions and open problems that need to be addressed.

中文翻译：

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环形谐振器的拓扑相：近期进展和未来前景

摘要 拓扑光子学已成为设计从微波到纳米光子学的电磁系统的新范式。迄今为止的研究主要集中在基本概念的演示上，例如非互惠性和防止制造混乱的波导。展望未来，迫切需要确定拓扑设计可以有效提高设备性能的应用。在这里，我们回顾了拓扑光子学在基​​于环形谐振器的系统中的应用，包括一维和二维谐振器阵列，以及动态调制谐振器。我们评估了潜在的应用，如量子光生成、无序鲁棒延迟线和光隔离，以及未来的研究方向和需要解决的开放问题。