We present a microwave experimental setup emulating tight-binding systems that is now widely used in the realm of topological photonics. A thorough description of the experimental building blocks is presented, showing the advantages and the limits of this platform. Various experimental realizations are then described, ranging from the selective enhancement of a defect state in a non-Hermitian Su-Schrieffer-Heeger (SSH) chain, to the generation of giant pseudo-magnetic fields in deformed honeycomb lattices. Introducing nonlinear losses, the interplay between nonlinearity and topological protection can be engineered to realize a nonlinearly functionalized topological mode with promising applications in receiver protection.

中文翻译：

---

拓扑光子学的微波谐振器晶格[邀请]

我们提出了一种模拟紧密结合系统的微波实验装置，该装置现已广泛用于拓扑光子学领域。提供了对实验构建块的全面描述，显示了该平台的优势和局限性。然后描述了各种实验实现，从选择性地增强非Hermitian Su-Schrieffer-Heeger（SSH）链中的缺陷状态，到在变形的蜂窝状晶格中生成巨大的伪磁场。通过引入非线性损耗，可以设计非线性与拓扑保护之间的相互作用，以实现具有非线性功能的拓扑模式，并在接收器保护中具有广阔的应用前景。