Intermodulation spectroscopy and the nonlinear response of two-level systems in superconducting coplanar waveguide resonators

Janka Biznárová, J. C. Rivera Hernández, Daniel Forchheimer +3

Two-level system (TLS) loss is typically limiting the coherence of superconducting quantum circuits. The loss induced by TLS defects is nonlinear, resulting in quality factors with…