Engineering Exchange Interaction in Coupled Spin-Qubit Quantum Dots

For coupled quantum dots formed in a single InAs quantum wire, we use the variational Heitler-London method to obtain the single- and two-particle ground state energies. We show the variational Heitler-London methods yield lower ground state energies than the conventional approach. We find that the exchange energy decreases as the wire diameter becomes smaller due to enhanced coulomb interaction in a quasi-one-dimensional system.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical and Computer Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Zhang, Lingxiao

Contributors dc:contributor

• Leburton, Jean-Pierre

• Engineering, Electronics and Electrical

Language dc:language

eng

Identifier

(MiAaPQ)AAI3337987

OAI record oai:identifier

https://www.ideals.illinois.edu/oai-pmh?verb=GetRecord&metadataPrefix=etdms&identifier=oai%3Awww.ideals.illinois.edu%3A2142%2F81107