Nonlinearities and parametric amplification in superconducting coplanar waveguide resonators

Nonlinearities and parametric amplification in superconducting coplanar waveguide resonators

Experimental investigations of the nonlinear properties of superconducting niobium coplanar waveguide resonators are reported. The nonlinearity due to a current dependent kinetic inductance of the center conductor is strong enough to realize bifurcation of the nonlinear oscillator. When driven with...

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Bibliographic Details
Published in:Applied physics letters Vol. 90; no. 25; pp. 253509 - 253509-3
Main Authors: Tholén, Erik A., Ergül, Adem, Doherty, Evelyn M., Weber, Frank M., Grégis, Fabien, Haviland, David B.
Format: Journal Article
Language:English
Published: American Institute of Physics 18-06-2007
Subjects:
Condensed matter physics
Fysik
Kondenserade materiens fysik
NATURAL SCIENCES
NATURVETENSKAP
Nonlinear oscillator
Parametric amplification
Physics
Superconductivity
Supraledning
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Summary:Experimental investigations of the nonlinear properties of superconducting niobium coplanar waveguide resonators are reported. The nonlinearity due to a current dependent kinetic inductance of the center conductor is strong enough to realize bifurcation of the nonlinear oscillator. When driven with two frequencies near the threshold for bifurcation, parametric amplification with a gain of + 22.4 dB is observed.
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/1.2750520