Coherent coupling of two quantum dots embedded in an Aharonov-Bohm ring

A. W. Holleitner, C. R. Decker, K. Eberl, R. H. Blick

Published 2000-11-02Version 1

We define two laterally gated small quantum dots (~ 15 electrons) in an Aharonov-Bohm geometry in which the coupling between the two dots can be broadly changed. For weakly coupled quantum dots we find Aharonov-Bohm oscillations. In an intermediate coupling regime we concentrate on the molecular states of the double dot and extract the magnetic field dependence of the coherent coupling.