Two-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagram
Loading...
Access rights
© 2002 American Physical Society (APS). This is the accepted version of the following article: Harju, A. & Siljamäki, S. & Nieminen, Risto M. 2002. Two-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagram. Physical Review Letters. Volume 88, Issue 22. 226804/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.88.226804, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.88.226804.
URL
Journal Title
Journal ISSN
Volume Title
School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Authors
Date
2002
Major/Subject
Mcode
Degree programme
Language
en
Pages
226804/1-4
Series
Physical Review Letters, Volume 88, Issue 22
Abstract
We study a two-electron quantum dot molecule in a magnetic field by the direct diagonalization of the Hamiltonian matrix. The ground states of the molecule with the total spin S=0 and S=1 provide a possible realization for a qubit of a quantum computer. Switching between the states is best achieved by changing the magnetic field. Based on an analysis of the wave function, we show that the system consists of composite particles formed by an electron and flux quanta attached to it. This picture can also be used to explain the spin phase diagram.Description
Keywords
quantum dots, molecules, magnetic fields
Other note
Citation
Harju, A. & Siljamäki, S. & Nieminen, Risto M. 2002. Two-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagram. Physical Review Letters. Volume 88, Issue 22. 226804/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.88.226804.