Validity of the single-particle description and charge noise resilience for multielectron quantum dots

2015/02/28 by Michiel A. Bakker, Sebastian Mehl, Tuukka Hiltunen +2 · 17 citations
Engineering · Physics and Astronomy · #Atomic orbital #Atomic physics #Charge (physics) #Coulomb #Coulomb blockade #Electron #Molecular physics #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #RADIUS #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physrevb.91.155425

published in Physical Review B 91(15) (American Physical Society) · 11+ pages, 5 figures

arxiv created 2015/04/22 · openalex publication_date 2015/04/22 · arxiv updated 2015/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We construct an optimal set of single-particle states for few-electron quantum dots (QDs) using the method of natural orbitals (NOs). The NOs include also the effects of the Coulomb repulsion between electrons. We find that they agree well with the noniteracting orbitals for GaAs QDs of realistic parameters, while the Coulomb interactions only rescale the radius of the NOs compared to the noninteracting case. We use NOs to show that four-electron QDs are less susceptible to charge noise than their two-electron counterparts.

Citations

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