2k citations · 12.8k across the 101 of their papers we have counts for
5 papers · 1 filter
Improving quantum gate fidelities by using a qubit to measure microwave pulse distortions
Simon Gustavsson, Olger Zwier, Jonas Bylander +5
We present a new method for determining pulse imperfections and improving the single-gate fidelity in a superconducting qubit. By applying consecutive positive and negative pul…
Time-Reversal Symmetry and Universal Conductance Fluctuations in a Driven Two-Level System
Simon Gustavsson, Jonas Bylander, William D. Oliver
In the presence of time-reversal symmetry, quantum interference gives strong corrections to the electric conductivity of disordered systems. The self-interference of an electron wa…
Dynamical decoupling and dephasing in interacting two-level systems
Simon Gustavsson, Fei Yan, Jonas Bylander +4
We implement dynamical decoupling techniques to mitigate noise and enhance the lifetime of an entangled state that is formed in a superconducting flux qubit coupled to a microscopi…
Shadow evaporation of epitaxial Al/Al2O3/Al tunnel junctions on sapphire utilizing an inorganic bilayer mask
Paul B. Welander, Vladimir Bolkhovsky, Terence J. Weir +2
This letter describes a new inorganic shadow mask that has been employed for the evaporation of all-epitaxial Al/Al2O3/Al superconducting tunnel junctions. Organic resists that are…
Spectroscopy of low-frequency noise and its temperature dependence in a superconducting qubit
Fei Yan, Jonas Bylander, Simon Gustavsson +7
We report a direct measurement of the low-frequency noise spectrum in a superconducting flux qubit. Our method uses the noise sensitivity of a free-induction Ramsey interference ex…