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Reduced frequency noise in superconducting resonators

Barends, R. and Vercruyssen, N. and Endo, A. and de Visser, P. J. and Zijlstra, T. and Klapwijk, T. M. and Baselmans, J. J. A. (2010) Reduced frequency noise in superconducting resonators. Applied Physics Letters, 97 (3). Art. No. 033507. ISSN 0003-6951. doi:10.1063/1.3467052.

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We report a reduction in the frequency noise in coplanar waveguide superconducting resonators. The reduction of 7 dB is achieved by removing the exposed dielectric substrate surface from the region with high electric fields and by using NbTiN. In a model-analysis the surface of NbTiN is found to be a negligible source of noise, experimentally supported by a comparison with NbTiN on SiO_x resonators. The reduction is additive to decreasing the noise by widening the resonators.

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Additional Information:© 2010 American Institute of Physics. Received 28 May 2010; accepted 30 June 2010; published online 23 July 2010. The authors thank J. M. Martinis for stimulating discussions. The work was supported by the Pieter Langerhuizen Lambertuszoon funds of the Royal Holland Society of Sciences and Humanities and by the EU NanoSciERA project “Nanofridge.”
Group:Keck Institute for Space Studies
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Pieter Langerhuizen Lambertuszoon FondsUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20160311-142611843
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65311
Deposited By: Colette Connor
Deposited On:14 Mar 2016 21:05
Last Modified:10 Nov 2021 23:43

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