Polarization-dependent shift in excitonic Zeeman splitting of self-assembled InAlAs quantum dots

TL;DR

This paper investigates how the Zeeman splitting in a single InAlAs quantum dot varies with light polarization, revealing a controllable Overhauser field of 0.16 T influenced by excitation light polarization.

Contribution

It demonstrates polarization-dependent Zeeman splitting and controllable Overhauser field in a single InAlAs quantum dot, providing new insights into spin manipulation.

Findings

Overhauser field estimated at 0.16 T

Zeeman splitting shift depends on light polarization

Overhauser field controllable by excitation light polarization

Abstract

We report the optical spectroscopic results of a single self-assembled InAlAs/Al GaAs quantum dot. The polarization-dependent shift of the Zeeman splitting in a single InAlAs QD has been observed. The induced Overhauser field is estimated to be 0.16 T in this InAlAs QD and the magnitude is shown to be controllable by the degree of circular polarization of excitation light.