title: Experimental demonstration of an oscillator stabilized Josephson flux qubit.
abstract: We experimentally demonstrate the use of a superconducting transmission line, shorted at both ends, to stabilize the operation of a tunable flux qubit. Using harmonic-oscillator stabilization and pulsed dc operation, we have observed Larmor oscillations with a single shot visibility of 90%. In another qubit, the visibility was 60% and there was no measurable visibility reduction after 35 ns.
authors.affiliation: IBM Watson Research Center, Yorktown Heights, New York 10598, USA.
authors.forename: R H
authors.initials: RH
authors.lastname: Koch
authors.forename: G A
authors.initials: GA
authors.lastname: Keefe
authors.forename: F P
authors.initials: FP
authors.lastname: Milliken
authors.forename: J R
authors.initials: JR
authors.lastname: Rozen
authors.forename: C C
authors.initials: CC
authors.lastname: Tsuei
authors.forename: J R
authors.initials: JR
authors.lastname: Kirtley
authors.forename: D P
authors.initials: DP
authors.lastname: DiVincenzo