86 citations · 167 across the 3 of their papers we have counts for
6 papers
Implementation of a Quantum Annealing Algorithm Using a Superconducting Circuit
R. Harris, A. J. Berkley, J. Johansson +10
A circuit consisting of a network of coupled compound Josephson junction rf-SQUID flux qubits has been used to implement an adiabatic quantum optimization algorithm. It is shown th…
Geometrical dependence of low frequency noise in superconducting flux qubits
T. Lanting, A. J. Berkley, B. Bumble +11
A general method for directly measuring the low-frequency flux noise (below 10 Hz) in compound Josephson junction superconducting flux qubits has been used to study a series of 85…
Probing Noise in Flux Qubits via Macroscopic Resonant Tunneling
R. Harris, M. W. Johnson, S. Han +13
Macroscopic resonant tunneling between the two lowest lying states of a bistable RF-SQUID is used to characterize noise in a flux qubit. Measurements of the incoherent decay rate a…
Vacuum Rabi oscillations in a macroscopic superconducting qubit LC oscillator system
J. Johansson, S. Saito, T. Meno +4
We have observed the coherent exchange of a single energy quantum between a flux qubit and a superconducting LC circuit acting as a quantum harmonic oscillator. The exchange of an…
Giant fluctuations of superconducting order parameter in Ferromagnet/superconductor single electron transistors
J. Johansson, V. Korenivski, D. B. Haviland +1
Spin dependent transport in a ferromagnet/superconductor/ferromagnet single electron transistor is studied theoretically with spin accumulation, spin relaxation, gap suppression, a…
Suppression of superconductivity due to spin imbalance in Co/Al/Co single electron transistor
Jan Johansson, Mattias Urech, David Haviland +1
Transport properties of ferromagnetic/non-magnetic/ferromagnetic single electron transistors are investigated as a function of external magnetic field, temperature, bias and gate v…