A simple quantum gate with atom chips M. A. Cirone, A. Negretti, T. Calarco, P. Krüger and J. Schmiedmayer Eur. Phys. J. D, 35 1 (2005) 165-171 Published online: 28 June 2005 DOI: 10.1140/epjd/e2005-00175-8