Fully integrated topological electronics

Topological insulators (TIs) have attracted significant attention in photonics and acoustics due to their unique physical properties and promising applications. Electronics has recently emerged as an exciting arena to study various topological phenomena because of its advantages in building complex topological structures. Here, we explore TIs on an integrated circuit (IC) platform with a standard complementary metal-oxide-semiconductor technology. Based on the Su-Schrieffer-Heeger model, we design a fully integrated topological circuit chain using multiple capacitively-coupled inductor-capacitor resonators. We perform comprehensive post-layout simulations on its physical layout to observe and evaluate the salient topological features. Our results demonstrate the existence of the topological edge state and the remarkable robustness of the edge state against various defects. Our work shows the feasibility and promise of studying TIs with IC technology, paving the way for future explorations of large-scale topological electronics on the scalable IC platform.

Automated summary

Topological insulators (TIs) have been widely studied in photonics and acoustics due to their unique physical properties and potential applications. This article explores TIs on an integrated circuit (IC) platform and designs a fully integrated topological circuit chain. Through comprehensive post-layout simulations, the researchers observe and evaluate the characteristics of the topological circuit. The results demonstrate the feasibility and promise of large-scale topological electronics research with IC technology.