Exciton storage in a nano-scale Aharonov-Bohm ring with electric field tuning

TL;DR

This paper presents an analytical study of exciton behavior in a nano-scale ring influenced by magnetic flux and electric field, demonstrating how to control optical activity for potential exciton storage and read-out applications.

Contribution

It introduces a simple model showing how external fields can tune excitonic systems from optically active to dark states, enabling controlled exciton storage.

Findings

External electric and magnetic fields can switch exciton optical activity.

The model provides a mechanism for exciton storage and read-out.

Optical properties are tunable via external field parameters.

Abstract

We study analytically the optical properties of a simple model for an electron-hole pair on a ring subjected to perpendicular magnetic flux and in-plane electric field. We show how to tune this excitonic system from optically active to optically dark as a function of these external fields. Our results offer a simple mechanism for exciton storage and read-out.