Tunable Non-local Spin Control in a Coupled Quantum Dot System
Mesoscale and Nanoscale Physics
2009-11-10 v2
Abstract
The effective interaction between magnetic impurities in metals that can lead to various magnetic ground states often competes with a tendency for electrons near impurities to screen the local moment (Kondo effect). The simplest system exhibiting the richness of this competition, the two-impurity Kondo system, is here realized experimentally in the form of two quantum dots coupled through an open conducting region. We demonstrate non-local spin control by suppressing and splitting Kondo resonances in one quantum dot by changing electron number and coupling of the other dot. Results suggest an approach to non-local spin control relevant to quantum information processing.
Cite
@article{arxiv.cond-mat/0404213,
title = {Tunable Non-local Spin Control in a Coupled Quantum Dot System},
author = {N. J. Craig and J. M. Taylor and E. A. Lester and C. M. Marcus and M. P. Hanson and A. C. Gossard},
journal= {arXiv preprint arXiv:cond-mat/0404213},
year = {2009}
}
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