Fabrication and heating rate study of microscopic surface electrode ion traps
Abstract
We report heating rate measurements in a microfabricated gold-on-sapphire surface electrode ion trap with trapping height of approximately 240 micron. Using the Doppler recooling method, we characterize the trap heating rates over an extended region of the trap. The noise spectral density of the trap falls in the range of noise spectra reported in ion traps at room temperature. We find that during the first months of operation the heating rates increase by approximately one order of magnitude. The increase in heating rates is largest in the ion loading region of the trap, providing a strong hint that surface contamination plays a major role for excessive heating rates. We discuss data found in the literature and possible relation of anomalous heating to sources of noise and dissipation in other systems, namely impurity atoms adsorbed on metal surfaces and amorphous dielectrics.
Keywords
Cite
@article{arxiv.1009.2834,
title = {Fabrication and heating rate study of microscopic surface electrode ion traps},
author = {N. Daniilidis and S. Narayanan and S. A. Möller and R. Clark and T. E. Lee and P. J. Leek and A. Wallraff and St. Schulz and F. Schmidt-Kaler and H. Häffner},
journal= {arXiv preprint arXiv:1009.2834},
year = {2011}
}
Comments
17 pages, 5 figures