Interpolation approach to Hamiltonian-varying quantum systems and the adiabatic theorem Yu Pan, Zibo Miao, Nina H Amini, Valery Ugrinovskii and Matthew R James EPJ Quantum Technol., 2 1 (2015) 24 Published online: 25 November 2015 DOI: 10.1140/epjqt/s40507-015-0037-x