Near-field imaging of synthetic dimensional integrated plasmonic topological Harper nanochains.

ABSTRACT: Topological photonics offers immense potential for applications in integrated photonic devices and information processing chips. Aubry-André-Harper model provides a platform for exploring new physics and practical applications. However, the on-chip integration of an ultracompact Aubry-André-Harper plasmonic topological insulator has encountered two limitations: the strict precision requirements for coupling parameters during sample preparation and the presence of hotspots in the nanogaps between plasmonic nanostructures, which impede direct near-field measurements. In this work, we propose a novel approach to address these challenges by integrating gold nanodisks with connecting waveguides. The topological properties of the Aubry-André-Harper configuration are directly characterized using

SUBMITTER: Yan Q 

PROVIDER: S-EPMC11911440 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature