102 citations · 441 across the 9 of their papers we have counts for
9 papers
Sharpness of the Berezinskii-Kosterlitz-Thouless transition in ultrathin NbN films
Alexander Weitzel, Lea Pfaffinger, Ilaria Maccari +8
We present a comprehensive investigation of the Berezinskii-Kosterlitz-Thouless (BKT) transition in ultrathin strongly disordered NbN films. Measurements of resistance, current-vol…
Quantized current steps due to the a.c. coherent quantum phase-slip effect
R. S. Shaikhaidarov, K. H. Kim, J. W. Dunstan +7
The AC Josephson effect predicted in 1962 and observed experimentally in 1963 as quantised voltage steps (the Shapiro steps) from photon assisted tunnelling of Cooper pairs is amon…
Reflection-enhanced gain in traveling-wave parametric amplifiers
S. Kern, P. Neilinger, E. Iľichev +12
The operating principle of traveling-wave parametric amplifiers is typically understood in terms of the standard coupled mode theory, which describes the evolution of forward propa…
Adiabatic quantum computation with flux qubits, first experimental results
S. H. W. van der Ploeg, A. Izmalkov, M. Grajcar +10
Controllable adiabatic evolution of a multi-qubit system can be used for adiabatic quantum computation (AQC). This evolution ends at a configuration where the Hamiltonian of the sy…
Realization of a classical counterpart of a scalable design for adiabatic quantum computation
V. Zakosarenko, N. Bondarenko, S. H. W. van der Ploeg +6
We implement a classical counterpart of a scalable design for adiabatic quantum computation. The key element of this design is a coupler providing controllable coupling between two…
Four-qubit device with mixed couplings
M. Grajcar, A. Izmalkov, S. H. W. van der Ploeg +12
We present the first experimental results on a device with more than two superconducting qubits. The circuit consists of four three-junction flux qubits, with simultaneous ferro- a…