Experimental demonstration of position-controllable topological interface states in high-frequency topological integrated circuits

TL;DR

This paper demonstrates the experimental realization of high-frequency topological interface states in integrated circuits, allowing controllable positioning of Majorana-like states for advanced topological electronics.

Contribution

It introduces a high-frequency (up to 13GHz) integrated circuit implementation of topological states with switchable interface positioning, advancing topological electronics.

Findings

Achieved topological interface states at frequencies up to 13GHz.

Successfully controlled the position of Majorana-like states within the circuit.

Observed explicit spatial profiles of topological edge states.

Abstract

Topological integrated circuits are integrated-circuit realizations of topological systems. Here we show an experimental demonstration by taking the case of the Kitaev topological superconductor model. An integrated-circuit implementation enables us to realize high resonant frequency as high as 13GHz. We explicitly observe the spatial profile of a topological edge state. In particular, the topological interface state between a topological segment and a trivial segment is the Majorana-like state. We construct a switchable structure in the integrated circuit, which enables us to control the position of a Majorana-like interface state arbitrarily along a chain. Our results contribute to the development of topological electronics with high frequency integrated circuits.