The optical properties of excitons confined in initially-unstrained GaAs/AlGaAs quantum dots are studied as a function of a variable quasi-uniaxial stress. To allow the validation of state-of-the-art computational tools for describing the optical properties of nanostructures, we determine the quantum dot morphology and the in-plane components of externally induced strain tensor at the quantum dot positions. Based on these \textsl{experimental} parameters, we calculate the strain-dependent excitonic emission energy, degree of linear polarization, and fine-structure splitting using a combination of eight-band k⋅p formalism with multiparticle corrections using the configuration interaction method. The experimental observations are quantitatively well reproduced by our calculations and deviations are discussed.
@article{arxiv.2210.06999,
title = {GaAs quantum dots under quasi-uniaxial stress: experiment and theory},
author = {Xueyong Yuan and Saimon F. Covre da Silva and Diana Csontosova and Huiying Huang and Christian Schimpf and Marcus Reindl and Junpeng Lu and Zhenhua Ni and Armando Rastelli and Petr Klenovsky},
journal= {arXiv preprint arXiv:2210.06999},
year = {2023}
}