Signatures of Many-Particle Correlations in Two-Dimensional Fourier-Transform Spectra of Semiconductor Nanostructures

TL;DR

This paper identifies how many-particle correlations manifest in 2D Fourier-Transform Spectra of semiconductor nanostructures, linking microscopic theory with experimental observations and polarization effects.

Contribution

It provides a microscopic theoretical analysis of many-particle correlation signatures in 2D-FTS, validated by comparison with experimental data.

Findings

Correlation signatures depend on polarization configurations.

Spectra reveal characteristic features of excitonic resonances.

Theoretical predictions match experimental observations.

Abstract

On the basis of a microscopic theory, the signatures of many-particle correlations in Two-Dimensional Fourier-Transform Spectra (2D-FTS) of semiconductor nanostructures are identified and compared to experimental data. Spectra in the photon energy range of the heavy-hole and light-hole excitonic resonances show characteristic features due to correlations, which depend on the relative polarization directions of the excitation pulses.