Low-bandwidth control scheme for an oscillator stabilized Josephson qubit
Superconductivity
2009-11-10 v1 Mesoscale and Nanoscale Physics
Quantum Physics
Abstract
We introduce a new 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.
Keywords
Cite
@article{arxiv.cond-mat/0411380,
title = {Low-bandwidth control scheme for an oscillator stabilized Josephson qubit},
author = {R. H. Koch and J. R. Rozen and G. A. Keefe and F. M. Milliken and C. C. Tsuei and J. R. Kirtley and D. P. DiVincenzo},
journal= {arXiv preprint arXiv:cond-mat/0411380},
year = {2009}
}
Comments
5 pages, pdflatex