Characterizing a Frequency Converter Based on a Superconducting Coplanar Waveguide

We present a technique for implementing a frequency-doubler in NbTiN on silicon for operation in a cryogenic environment. The kinetic inductance of a superconducting coplanar waveguide is exploited for efficient frequency conversion, while the fabrication allows for co-location with other cryogenic circuits. A conversion efficiency greater than 10% is demonstrated at a frequency of 9.87 GHz, offering lower input power requirements and competitive conversion efficiencies relative to other state-of-the-art solutions.