Electron-hole correlation effects in the emission of light from quantum wires

TL;DR

This paper develops a self-consistent theoretical model to analyze electron-hole correlations in quantum wire light emission, revealing their importance in low-temperature and high-density regimes relevant for lasing.

Contribution

It introduces a self-consistent approach incorporating higher order correlations beyond the ladder approximation for quantum wire emission analysis.

Findings

Correlations significantly affect emission at low temperatures.

High-density regimes relevant for lasing are influenced by these correlations.

Self-consistency improves the accuracy of excitonic emission predictions.

Abstract

We present a self-consistent treatment of the electron-hole correlations in optically excited quantum wires within the ladder approximation, and using a contact potential interaction. The limitations of the ladder approximation to the excitonic low-density region are largely overcome by the introduction of higher order correlations through self consistency. We show relevance of these correlations in the low-temperature emission, even for high density relevant in lasing, when large gain replaces excitonic absorption.