Eigenstates of an operating quantum computer: hypersensitivity to static imperfections G. Benenti, G. Casati, S. Montangero and D. L. Shepelyansky Eur. Phys. J. D, 20 2 (2002) 293-296 Published online: 19 July 2002 DOI: 10.1140/epjd/e2002-00127-x