In article number 2000584, Tao Li and co-workers from Nanjing University experimentally demonstrated topological π modes induced by Floquet gauge transition in a silicon waveguides platform. The flexible control of the Floquet gauge provides new degrees of freedom to manipulate the topological modes and enables interesting functionalities such as asymmetric topological transport, i.e., the localization is protected only for light propagating in one direction.

中文翻译：

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拓扑光子学：光子波导中的规范诱导 Floquet 拓扑状态（Laser Photonics Rev. 15(8)/2021）

在文章编号 2000584 中，南京大学的 Tao Li 和同事通过实验证明了由 Floquet 规范跃迁在硅波导平台中引起的拓扑 π 模式。Floquet 规的灵活控制为操纵拓扑模式提供了新的自由度，并实现了有趣的功能，例如非对称拓扑传输，即仅对光在一个方向上传播的定位受到保护。