Direct detection of quasiparticle tunneling with a charge-sensitive
superconducting sensor coupled to a waveguide
Direct detection of quasiparticle tunneling with a charge-sensitive
superconducting sensor coupled to a waveguide
Detecting quasiparticle tunneling events in superconducting circuits provides information about the population and dynamics of non-equilibrium quasiparticles. Such events can be detected by monitoring changes in the frequency of an offset-charge-sensitive superconducting qubit. This monitoring has so far been performed by Ramsey interferometry assisted by a readout resonator. Here, we …