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Noise properties of superconducting coplanar waveguide microwave resonators

Gao, Jiansong and Zmuidzinas, Jonas and Mazin, Benjamin A. and LeDuc, Henry G. and Day, Peter K. (2007) Noise properties of superconducting coplanar waveguide microwave resonators. Applied Physics Letters, 90 (10). Art. No. 102507. ISSN 0003-6951.

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The authors have measured noise in thin-film superconducting coplanar waveguide resonators. This noise appears entirely as phase noise, equivalent to a jitter of the resonance frequency. In contrast, amplitude fluctuations are not observed at the sensitivity of their measurement. The ratio between the noise power in the phase and amplitude directions is large, in excess of 30 dB. These results have important implications for resonant readouts of various devices such as detectors, amplifiers, and qubits. They suggest that the phase noise is due to two-level systems in dielectric materials.

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Additional Information:©2007 American Institute of Physics. (Received 20 September 2006; accepted 1 February 2007; published online 8 March 2007) The authors thank Sunil Golwala, Kent Irwin, Andrew Lange, Konrad Lehnert, John Martinis, and Harvey Moseley for useful discussions. This work was supported in part by the NASA Science Mission Directorate, JPL, Gordon and Betty Moore Foundation, and Alex Lidow, a Caltech Trustee.
Subject Keywords:phase noise; coplanar waveguides; superconducting resonators
Issue or Number:10
Record Number:CaltechAUTHORS:GAOapl07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7594
Deposited By: Archive Administrator
Deposited On:10 Mar 2007
Last Modified:02 Oct 2019 23:43

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