Beyond 110 GHz Electro‐Optic Slow‐Light Modulation via Cascaded One‐Dimensional Topological Edge States on Thin‐Film Lithium Tantalate
High‐speed and broadband electro‐optic modulators are crucial for next‐generation optical interconnects, yet conventional designs face a trade‐off between modulation bandwidth and efficiency. Here, we exploit and implement superlattice structures on thin‐film lithium tantalate to achieve slow‐light‐enhanced electro...