Observation of Microwave Frequency Combs in Non-Linear Superconducting Resonators

ORAL

Abstract

We report on microwave frequency combs generated in non-linear superconducting resonators. In this work, we used coplanar waveguide transmission line resonators fabricated from thin film NbTiN with fundamental modes at either 2 GHz or 3.5 GHz. The inherent nonlinearity of the NbTiN films allows familiar four-wave mixing processes like parametric amplification, harmonic generation, and frequency combs. Our measurements, performed at 1.5 K, characterized the frequency combs in terms of applied power and spectral output. We will also propose mechanisms for frequency comb generation in this

* This work was performed, in part, at the Center for Integrated Nanotechnologies, a U.S. DOE, Office of Basic Energy Sciences, user facility. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.

–

Presenters

  • Rupert M Lewis

    Sandia National Labs

Authors

  • Rupert M Lewis

    Sandia National Labs