Two-electron entanglement in elliptically deformed quantum dots

TL;DR

This paper investigates how anisotropy and interaction strength affect entanglement in a two-electron quantum dot system, revealing that anisotropy significantly influences entanglement in the strong-correlation regime.

Contribution

It provides an analytical approach to understanding entanglement in anisotropic quantum dots, especially in the strong interaction limit, using entropic measures.

Findings

Entanglement increases with anisotropy in the strong-correlation regime.

Harmonic approximation becomes exact in the strong interaction limit.

Asymptotic expression for linear entropy derived.

Abstract

Entropic entanglement measures of a two-dimensional system of two Coulombically interacting particles confined in an anisotropic harmonic potential are discussed in dependence on the anisotropy and the interaction strength. The harmonic approximation appears exact in the strong interaction limit, allowing determination of the asymptotic expression for the linear entropy. Entanglement properties are dramatically influenced by the anisotropy of the confining potential in the strong-correlation regime.