Introduction of a DC Bias into a High-Q Superconducting Microwave Cavity
Rimberg J. Alex, Fei Chen, Adam J. Sirois, Raymond W. Simmonds
We report a technique for applying a dc voltage or current bias to the center conductor of a high-quality factor superconducting microwave cavity without significantly disturbing selected cavity modes. This is accomplished by incorporating dc bias lines into the cavity at specific locations. The measured S-matrix parameters of the system are in good agreement with theoretical predictions and simulations. We find that the quality factor of the cavity degrades by less than 1% under the application of a dc bias.
, Chen, F.
, Sirois, A.
and Simmonds, R.
Introduction of a DC Bias into a High-Q Superconducting Microwave Cavity, Applied Physics Letters, [online], https://doi.org/10.1063/1.3573824
(Accessed September 17, 2021)