Document Type
Conference Proceeding
Publication Date
1-1-2017
Publication Title
Journal of Physics: Conference Series
Publisher
Institute of Physics Publishing
Volume
875
Issue
12
First page number:
1
Last page number:
2
Abstract
The decoherence of trapped-ion quantum gates due to heating of their motional modes is a fundamen-tal science and engineering problem. This heating is attributed to electric-field noise arising from the trap-electrode surfaces. We have investigated the origin of this noise by focusing on the diffusion of carbon-containing adsorbates on the Au(110) surface. We show how the carbon adatom diffusion on the gold surface changes the energy landscape, and how the adatom dipole moment varies with the diffusive motion. A simple model for the diffusion noise, which varies quadratically with the variation of the dipole moment, predicts a noise spectrum, in accord with the measured values.
File Format
File Size
352 KB
Language
english
Rights
IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Repository Citation
Kim, E.,
Safavi Naini, A.,
Hite, D. A.,
McKay, K. S.,
Pappas, D. P.,
Weck, P. F.,
Sadeghpour, H. R.
(2017).
Electric-Field Noise and Carbon Diffusion on Au(110).
Journal of Physics: Conference Series, 875(12),
1-2.
Institute of Physics Publishing.
http://dx.doi.org/10.1088/1742-6596/875/12/112013