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Fabrication and heating rate study of microscopic surface electrode ion traps

Daniilidis, N. and Narayanan, S. and Möller, S. A. and Clark, R. and Lee, T. E. and Leek, P. J. and Wallraff, A. and Schulze, St. and Schmidt-Kaler, F. and Häeffner, H. (2011) Fabrication and heating rate study of microscopic surface electrode ion traps. New Journal of Physics, 13 . Art. No. 013032. ISSN 1367-2630.

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We report heating rate measurements in a microfabricated gold-on-sapphire surface electrode ion trap with a trapping height of approximately 240 μm. 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 the possible relation of anomalous heating to sources of noise and dissipation in other systems, namely impurity atoms adsorbed onto metal surfaces and amorphous dielectrics.

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Additional Information:© 2011 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Received 15 September 2010. Published 24 January 2011. We thank John Martinis and Gabor A Somorjai for useful discussions, and D Frank Ogletree for pointing out important work on non-contact friction. This work was supported by the Austrian Ministry of Sciences with a START grant. ND was supported in part by the European Union with a Marie Curie fellowship. SN was partially supported by the Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory under the US Department of Energy contract no. DE-AC02-05CH11231 and SS was supported by the Alexander von Humboldt Foundation with a Feodor Lynen Fellowship. FSK acknowledges support by the European Commission with AQUTE and by the German-Israel Science Foundation.
Funding AgencyGrant Number
Austrian Ministry of Sciences START GrantUNSPECIFIED
European Union (EU) Marie Curie FellowshipUNSPECIFIED
Development Program of Lawrence Berkeley National LaboratoryUNSPECIFIED
Department of Energy (DOE) Lawrence Berkeley National LaboratoryDE-AC02-05CH11231
Alexander von Humboldt Foundation Feodor Lynen FellowshipUNSPECIFIED
European Commission AQUTEUNSPECIFIED
German-Israel Science FoundationUNSPECIFIED
Classification Code:PACS: 81.65.-b; 68.43.Mn; 07.20.-n
Record Number:CaltechAUTHORS:20110414-085409672
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Official Citation:013032 Fabrication and heating rate study of microscopic surface electrode ion traps N Daniilidis, S Narayanan, S A Möller, R Clark, T E Lee, P J Leek, A Wallraff, St Schulz, F Schmidt-Kaler and H Häffner doi: 10.1088/1367-2630/13/1/013032
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23317
Deposited By: Ruth Sustaita
Deposited On:14 Apr 2011 20:42
Last Modified:03 Oct 2019 02:45

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