Periodic array of quantum rings strongly coupled to circularly polarized light as a topological insulator

TL;DR

This paper theoretically shows that a high-frequency circularly polarized light can induce topological insulating states in a 2D array of quantum rings, enabling optical control of topological phases in mesoscopic structures.

Contribution

It introduces a theoretical method to turn a quantum ring array into a topological insulator using circularly polarized light, advancing optical control of topological phases.

Findings

High-frequency circularly polarized light induces topological insulator states.

The approach allows analysis of edge states and electronic densities.

Potential for optical manipulation of topological phases in quantum ring structures.

Abstract

We demonstrate theoretically that a strong high-frequency circularly polarized electromagnetic field can turn a two-dimensional periodic array of interconnected quantum rings into a topological insulator. The elaborated approach is applicable to calculate and analyze the electron energy spectrum of the array, the energy spectrum of the edge states and the corresponding electronic densities. As a result, the present theory paves the way to optical control of the topological phases in ring-based mesoscopic structures.