Engineering of exchange interactions in electrostatic quantum dots for information processing

D. V. Melnikov, J. P. Leburto

Research output: Contribution to journalReview article

Abstract

A theoretical analysis of the electronic properties of a few-electron system confined in multiple coupled quantum dots (QDs) is presented. Accurate numerical approaches of the exact diagonalization and Monte Carlo to compute energy spectra and other relevant quantities of the confined many-electron system are described. General features such as single electron tunneling and charge stability diagram in QDs are reviewed. Level crossings with corresponding density variations (rotations) in coupled QD structures with large aspect ratios and their effects on the charge stability diagram and addition energy spectra are then discussed.

Original languageEnglish (US)
Pages (from-to)449-463
Number of pages15
JournalJournal of Computational and Theoretical Nanoscience
Volume8
Issue number3
DOIs
StatePublished - Mar 2011

Keywords

  • Exact Diagonalization
  • Exchange Coupling
  • Quantum Computing
  • Quantum Dot
  • Variational Monte Carlo
  • Von Neumann-Wigner Theorem

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Computational Mathematics
  • Electrical and Electronic Engineering

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