Nonlinearities and Parametric Amplification in Superconducting Coplanar Waveguide Resonators

Details Nonlinearities and Parametric Amplification in Superconducting Coplanar Waveguide Resonators Nonlinearities and Parametric Amplification in Superconducting Coplanar Waveguide Resonators

2007-02-12

arxiv.org/abs/cond-mat/0702280v2

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures, 1 table. In version 2: Added appendix with model description and fits to measurements. Minor corrections a

Scientific paper

10.1063/1.2750520

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.

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