Fast initial qubit dephasing and the influence of substrate dimensions on error correction rates R. Doll, P. Hänggi, S. Kohler and M. Wubs Eur. Phys. J. B, 68 4 (2009) 523-527 Published online: 01 April 2009 DOI: 10.1140/epjb/e2009-00115-6