Low temperature microwave superconducting resonators (SRs) are attractive candidates for
producing quantum-sensitive, arrayable energy or power detectors for astrophysical and …

The quality factor and energy decay time of superconducting resonators have been
measured as a function of material, geometry, and magnetic field. Once the dissipation of …

Thin-film superconductors with thickness∼ 30–500 nm are used as non-equilibrium
quantum detectors for photons, phonons or more exotic particles. One of the most basic …

We have illuminated a thin-film superconducting Al lumped-element microwave resonator
with 780 nm light and observed the resonator quality factor and resonance frequency as a …

This thesis describes the intrinsic limits of superconducting microresonator detectors. In a
superconductor at low temperature, most of the electrons are paired into so called Cooper …

We have measured the absorption of terahertz radiation in a BCS superconductor over a
broad range of frequencies from 200 GHz to 1.1 THz, using a broadband antenna-lens …

Superconducting resonators have to date been used for photon detection in a non-
equilibrium manner. In this paper, we demonstrate that such devices can also be used in a …

We demonstrate an increased quasiparticle recombination time in superconducting
resonators on a SiN x membrane, compared to identical resonators on a SiN x/Si wafer. An …

We measure photon occupancy in a thin-film superconducting lumped element resonator
coupled to a transmon qubit at 20 mK and find a nonlinear dependence on the applied …

We describe theoretically the depairing effect of a microwave field on diffusive s-wave
superconductors. The ground state of the superconductor is altered qualitatively in analogy …