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Proceedings Paper

Calculation of the Exchange Coupling in Si:P Donor Systems
Author(s): Timothy R. Starling; Cameron J. Wellard; Harry M. Quiney; Wayne Haig; Lloyd C. L. Hollenberg
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Paper Abstract

We examine exchange coupling in the Kate quantum computer, which consists of isolated spin-1/2 31P donors in a pure Si lattice. A calculation is made using full configuration interaction, a reasonably large basis set, and a simple physical model. Basis set convergence was not obtained, and increasing the size of the matrix further appears to be computationally impractical. We therefore consider a Gaussian basis set approach. A brief description of the McMurchie-Davidson algorithm for the expansion of SGTF functions into Hermite polynomials is given. We also give the results of a single-donor computation in this basis.

Paper Details

Date Published: 23 February 2005
PDF: 9 pages
Proc. SPIE 5650, Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems II, (23 February 2005); doi: 10.1117/12.583192
Show Author Affiliations
Timothy R. Starling, Univ. of Melbourne (Australia)
Cameron J. Wellard, Univ. of Melbourne (Australia)
Harry M. Quiney, Univ. of Melbourne (Australia)
Wayne Haig, Dept. of Defence (Australia)
Lloyd C. L. Hollenberg, Univ. of Melbourne (Australia)

Published in SPIE Proceedings Vol. 5650:
Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems II
Jung-Chih Chiao; David N. Jamieson; Lorenzo Faraone; Andrew S. Dzurak, Editor(s)

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