209 citations · 555 across the 6 of their papers we have counts for
6 papers
Efficient one- and two-qubit pulsed gates for an oscillator stabilized Josephson qubit
Frederico Brito, David P. DiVincenzo, Roger H. Koch +1
We present theoretical schemes for performing high-fidelity one- and two-qubit pulsed gates for a superconducting flux qubit. The "IBM qubit" consists of three Josephson junctions,…
Model for l/f Flux Noise in SQUIDs and Qubits
Roger H. Koch, David P. DiVincenzo, John Clarke
We propose a model for 1/f flux noise in superconducting devices (f is frequency). The noise is generated by the magnetic moments of electrons in defect states which they occupy fo…
Efficient evaluation of decoherence rates in complex Josephson circuits
David P. DiVincenzo, Frederico Brito, Roger H. Koch
A complete analysis of the decoherence properties of a Josephson junction qubit is presented. The qubit is of the flux type and consists of two large loops forming a gradiometer an…
Tunable magnetization damping in transition metal ternary alloys
S. Ingvarsson, Gang Xiao, S. S. P. Parkin +1
We show that magnetization damping in Permalloy, Ni80Fe20 (``Py''), can be enhanced sufficiently to reduce post-switching magnetization precession to an acceptable level by alloyin…
Current Induced Excitations in Cu/Co/Cu Single Ferromagnetic Layer Nanopillars
B. Oezyilmaz, A. D. Kent, J. Z. Sun +2
Current-induced magnetic excitations in Cu/Co/Cu single layer nanopillars (~50 nm in diameter) have been studied experimentally as a function of Co layer thickness at low temperatu…
Multi-level quantum description of decoherence in superconducting qubits
Guido Burkard, Roger H. Koch, David P. DiVincenzo
We present a multi-level quantum theory of decoherence for a general circuit realization of a superconducting qubit. Using electrical network graph theory, we derive a Hamiltonian…