%0 Journal Article
%T Exchange in a silicon-based quantum dot quantum computer architecture
%A S. N. Coppersmith
%A Seungwon Lee
%A Paul von Allmen
%J Physics
%D 2004
%I arXiv
%X In bulk silicon, intervalley electronic interference has been shown to lead to strong oscillations in the exchange coupling between impurity electronic wavefunctions, posing a serious manufacturability problem for proposed quantum computers. Here we show that this problem does not arise in proposed architectures using Si/SiGe quantum dots because of the large in-plane strain in Si quantum wells together with the strong confinement potential typical of heterostructures.
%U http://arxiv.org/abs/cond-mat/0408542v1