High-precision real-space simulation of electrostatically confined few-electron states
Abstract
In this paper, we present a computational procedure that utilizes real-space grids to obtain high precision approximations of electrostatically confined few-electron states such as those that arise in gated semiconductor quantum dots. We use the full configuration interaction method with a continuously adapted orthonormal orbital basis to approximate the ground and excited states of such systems. We also introduce a benchmark problem based on a realistic analytical electrostatic potential for quantum dot devices. We show that our approach leads to highly precise computed energies and energy differences over a wide range of model parameters. The analytic definition of the benchmark allows for a collection of tests that are easily replicated, thus facilitating comparisons with other computational approaches.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 01, 2022
- Source ID
- 10.1063/5.0089350
Entities
People
- Andrew Pan
- Andrey A. Kiselev
- Christopher R. Anderson
- Mark F. Gyure
- Richard S. Ross
- Sam Quinn
Organizations
- Defense Advanced Research Projects Agency
- HRL Laboratories
- University of California