# In situ tunable nonlinearity and competing signal paths in coupled superconducting resonators

@article{Fischer2020InS, title={In situ tunable nonlinearity and competing signal paths in coupled superconducting resonators}, author={M. Fischer and Qiming Chen and C. Besson and P. Eder and J. Goetz and S. Pogorzalek and M. Renger and E. Xie and M. Hartmann and K. Fedorov and A. Marx and F. Deppe and R. Gross}, journal={arXiv: Superconductivity}, year={2020} }

We have fabricated and studied a system of two tunable and coupled nonlinear superconducting resonators. The nonlinearity is introduced by galvanically coupled dc-SQUIDs. We simulate the system response by means of a circuit model, which includes an additional signal path introduced by the electromagnetic environment. Furthermore, we present two methods allowing us to experimentally determine the nonlinearity. First, we fit the measured frequency and flux dependence of the transmission data to… Expand

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