Entanglement creation in semiconductor quantum dot charge qubit

TL;DR

This paper theoretically investigates how quantum correlations and entanglement form during electron scattering in semiconductor quantum dots, highlighting the influence of transport resonances and Coulomb interactions.

Contribution

It introduces a theoretical framework for analyzing entanglement formation and decoherence effects in multi-electron scattering within quantum dot structures.

Findings

Transport resonances facilitate entanglement formation.

Quantum correlations depend on reflected and transmitted wavefunction components.

Coulomb scattering impacts decoherence in quantum dot systems.

Abstract

We study theoretically the appearance of quantum correlations in two- and three-electron scattering in single and double dots. The key role played by transport resonances into entanglement formation between the single-particle states is shown. Both reflected and transmitted components of the scattered particle wavefunction are used to evaluate the quantum correlations between the incident carrier and the bound particle(s) in the dots. Our investigation provides a guideline for the analysis of decoherence effects due to the Coulomb scattering in semiconductor quantum dots structures.