32 citations · 52 across the 8 of their papers we have counts for
8 papers
Fast Microwave-free State Preparation and Measurement of Superconducting Qubits
R. Abraham, F. Amet, P. Anderson +212
Fast, high-fidelity, scalable state preparation and measurement is critical to the realization of a quantum computing system. The state-of-the-art methods for preparation and reado…
A digitally controlled silicon quantum processing unit
Members of the HRL Quantum Team, Collaborators, : +255
Commercially-relevant quantum computers will require large numbers of high-performing qubits that can be manufactured, integrated, and controlled at scale. Silicon exchange-only (E…
Decoupling between propagating acoustic waves and two-level systems in hydrogenated amorphous silicon
M. Molina-Ruiz, H. C. Jacks, D. R. Queen +3
Specific heat measurements of hydrogenated amorphous silicon prepared by hot-wire chemical vapor deposition show a large density of two-level systems at low temperature. Annealing…
Ge thin-films with tantalum diffusion-barriers for use in Nb-based superconductor technology
C. Kopas, S. Zhang, J. Gonzales +4
Germanium thin films are an excellent candidate for use as a low-loss dielectric in superconducting microwave resonators, a low-loss inter-layer metal wiring dielectric, and passiv…
Characterization of the Chemical and Electrical Properties of Defects at the Niobium-Silicon Interface
Cameron Kopas, Madhu Krishna Murthy, Christopher Gregory +4
The nature and concentration of defects near niobium-silicon interfaces prepared with different silicon surface treatments were characterized using current-voltage (I-V), deep leve…
Low microwave loss in deposited Si and Ge thin-film dielectrics at single-photon power and low temperatures
Cameron J. Kopas, Justin Gonzales, Shengke Zhang +5
Our study shows that deposited Ge and Si dielectric thin-films can exhibit low microwave losses at near single-photon powers and sub-Kelvin temperatures (40 mK). This low…