Spin qubits in multielectron quantum dots

Journal Article

We study the effect of mesoscopic fluctuations on the magnitude of errors that can occur in exchange operations on quantum dot spin qubits. Midsize double quantum dots, with an odd number of electrons in the range of a few tens in each dot, are investigated through the constant interaction model using realistic parameters. It is found that the constraint of having short pulses and small errors implies keeping accurate control, at the few percent level, of several electrode voltages. In practice, the number of independent parameters per dot that one should tune depends on the configuration and ranges from one to four. © 2004 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Vorojtsov, S; Mucciolo, ER; Baranger, HU

Published Date

  • March 24, 2004

Published In

Volume / Issue

  • 69 / 11

Electronic International Standard Serial Number (EISSN)

  • 1550-235X

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.69.115329

Citation Source

  • Scopus