M.A. Lutz, R.M. Feenstra, et al.
Surface Science
We introduce a Josephson junction circuit for which quantum operations are realized by low-bandwidth, nearly adiabatic magnetic-flux pulses. Coupling to the fundamental mode of a superconducting transmission line permits a stabilization of the rotation angle of the quantum operation against flux noise. A complete scheme for one-qubit rotations, and high-visibility Ramsey-fringe oscillations, is given. We show that high visibility depends on passing through a portal in the space of applied fluxes, where the width of the portal is proportional to the ramp-up rate of the flux pulse. © 2005 The American Physical Society.
M.A. Lutz, R.M. Feenstra, et al.
Surface Science
Andreas C. Cangellaris, Karen M. Coperich, et al.
EMC 2001
Michiel Sprik
Journal of Physics Condensed Matter
M. Hargrove, S.W. Crowder, et al.
IEDM 1998