Interest in superconducting microresonators has grown dramatically over the past decade.
Resonator performance has improved substantially through the use of improved geometries …

Thin films of TiN were sputter-deposited onto Si and sapphire wafers with and without SiN
buffer layers. The films were fabricated into rf coplanar waveguide resonators, and internal …

Superconducting qubits are currently the leading platform for quantum computing and
quantum information processing in general. Over the last decade, there have been rapid …

Abstract Microwave kinetic Inductance Detectors, MKIDs, combine device simplicity, intrinsic
multiplexing capability and a good sensitivity for radiation detection from the X-ray to the sub …

We present detailed experimental and theoretical investigations of hotspots produced by
trapped vortex bundles and their effect on the radio-frequency (rf) surface resistance R s of …

We analyze the performance of a microwave chip mount that uses wirebonds to connect the
chip and mount grounds. A simple impedance ladder model predicts that transmission …

Low-loss deposited dielectrics are beneficial for the advancement of superconducting
integrated circuits for astronomy. In the microwave band (approximately 1–10 GHz) the …

Two-level systems (TLS) are an important, if not dominant, source of loss and noise for
superconducting resonators such as those used in kinetic inductance detectors and some …

Superconducting qubits probe environmental defects such as nonequilibrium quasiparticles,
an<? format?> important source of decoherence. We show that “hot” nonequilibrium …

We present a lab-on-chip experiment to accurately measure losses of superconducting
microstrip lines at microwave and submillimeter wavelengths. The microstrips are fabricated …