246 citations · 905 across the 12 of their papers we have counts for
12 papers
Surface science motivated by heating of trapped ions from the quantum ground state
D. A. Hite, K. S. McKay, D. P. Pappas
For the past two and a half decades, anomalous heating of trapped ions from nearby electrode surfaces has continued to demonstrate unexpected results. Caused by electric-field nois…
Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit
Maximilian Kristen, Andre Schneider, Alexander Stehli +9
Experiments with superconducting circuits require careful calibration of the applied pulses and fields over a large frequency range. This remains an ongoing challenge as commercial…
Crystallographic orientation dependence of work function: Carbon adsorption on Au surfaces
H. Z. Jooya, X. Fan, K. S. McKay +3
We investigate the work function (WF) variation of different Au crystallographic surface orientations with carbon atom adsorption. Ab-initio calculations within density-functional…
Mechanisms for carbon adsorption on Au(110)-(2*1): A work function analysis
H. Z. Jooya, K. S. McKay, E. Kim +4
The variation of the work function upon carbon adsorption on the reconstructed Au(110) surface is measured experimentally and compared to density functional calculations. The adsor…
Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity
D. A. Hite, K. S. McKay, S. Kotler +3
Electric-field noise from the surfaces of ion-trap electrodes couples to the ion's charge causing heating of the ion's motional modes. This heating limits the fidelity of quantum g…
Electric-field noise from carbon-adatom diffusion on a Au(110) surface: first-principles calculations and experiments
E. Kim, A. Safavi-Naini, D. A. Hite +4
The decoherence of trapped-ion quantum gates due to heating of their motional modes is a fundamental science and engineering problem. This heating is attributed to electric-field n…