Journal article (2011) - T Gerrits (author), MJ Stevens (author), S Bennink (author), WP Grice (author), S.N. Dorenbos (author), T Zijlstra (author), T.M. Klapwijk (author), V.G. Zwiller (author), B Baek (author), B Calkins (author), A Lita (author), S Glancy (author), E Knill (author), SW Nam (author), RP Mirin (author), RH Hadfield (author)