Adiabatic switching in coupled quantum dot systems facilitated by the coexistence of "molecular" and "atomic" states

R. Akis, Dragica Vasileska, D. K. Ferry

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

We model a double quantum dot system defined by a split metal gate over a GaAs/AlGaAs heterostructure, with the dots being coupled via a quantum point contact. Hybridization effects analogous to that of molecules are apparent. However, contrary to some previous studies, we find that there can be a coexistence of "atomic" and "molecular" regimes. The resulting behavior may be utilized to create a device that switches adiabatically, providing a possible route to dissipation-free computing.

Original languageEnglish (US)
Pages (from-to)4440-4442
Number of pages3
JournalApplied Physics Letters
Volume80
Issue number23
DOIs
StatePublished - Jun 10 2002

    Fingerprint

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this