Electronic Correlations in Double Quantum Dots

TL;DR

This paper investigates the electronic structure and spin configurations of two coupled quantum dots, demonstrating their potential as tunable quantum bits for quantum computing applications.

Contribution

It provides an exact diagonalization analysis of two-particle states in coupled quantum dots, highlighting their highly modifiable properties for quantum device use.

Findings

Quantum dots exhibit controllable spin singlet-triplet states.

Spatial correlations depend on coupling strength.

Potential application as quantum bit gates.

Abstract

We present a study of the electronic structure of two laterally coupled gaussian quantum dots filled with two particles. The exact diagonalization method has been used in order to inspect the spatial correlations and examine the particular spin singlet-triplet configurations for different coupling degrees between quantum dots. The outcome of our research shows this structure to have highly modifiable properties promoting it as an interesting quantum device, showing the possible use of this states as a quantum bit gate.