Unidirectional photonic edge states arise at the interface between two topologically distinct photonic crystals. Here, we demonstrate a micrometer-scale GaAs photonic ring resonator, created using a spin Hall-type topological photonic crystal waveguide. Embedded InGaAs quantum dots are used to probe the mode structure of the device. We map the spatial profile of the resonator modes and demonstrate the control of the mode confinement through tuning of the photonic crystal lattice parameters. The intrinsic chirality of the edge states makes them of interest for applications in integrated quantum photonics, and the resonator represents an important building block toward the development of such devices with embedded quantum emitters.

中文翻译：

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一种半导体拓扑光子环谐振器

单向光子边缘态出现在两个拓扑不同的光子晶体之间的界面处。在这里，我们展示了使用自旋霍尔型拓扑光子晶体波导创建的微米级 GaAs 光子环形谐振器。嵌入的 InGaAs 量子点用于探测器件的模式结构。我们绘制了谐振器模式的空间分布图，并通过调整光子晶格参数来演示模式限制的控制。边缘态的内在手性使它们在集成量子光子学中的应用受到关注，而谐振器代表了开发具有嵌入式量子发射器的此类器件的重要组成部分。