Quantum-gate implementation in permanently coupled AF spin rings without need of local fields
Other Condensed Matter
2009-11-10 v2
Abstract
We propose a scheme for the implementation of quantum gates which is based on the qubit encoding in antiferromagnetic molecular rings. We show that a proper engineering of the intercluster link would result in an effective coupling that vanishes as far as the system is kept in the computational space, while it is turned on by a selective excitation of specific auxiliary states. These are also shown to allow the performing of single- and two-qubit gates without an individual addressing of the rings by means of local magnetic fields.
Cite
@article{arxiv.cond-mat/0411113,
title = {Quantum-gate implementation in permanently coupled AF spin rings without need of local fields},
author = {F. Troiani and M. Affronte and S. Carretta and P. Santini and G. Amoretti},
journal= {arXiv preprint arXiv:cond-mat/0411113},
year = {2009}
}
Comments
To appear in Physical Review Letters