BACKGROUND The past two decades have seen intense efforts aimed at building quantum
computing hardware with the potential to solve problems that are intractable on classical …

The performance of superconducting circuits for quantum computing is limited by materials
losses. In particular, coherence times are typically bounded by two-level system (TLS) …

Technologies that rely on quantum bits (qubits) require long coherence times and high-
fidelity operations. Superconducting qubits are one of the leading platforms for achieving …

In a superconductor, absorption of photons with an energy below the superconducting gap
leads to redistribution of quasiparticles over energy and thus induces a strong …

If driven sufficiently strongly, superconducting microresonators exhibit nonlinear behavior
including response bifurcation. This behavior can arise from a variety of physical …

In a superconductor, in which electrons are paired, the density of unpaired electrons should
become zero when approaching zero temperature. Therefore, radiation detectors based on …

For space observatories, the glitches caused by high energy phonons created by the
interaction of cosmic ray particles with a detector substrate lead to dead time during …

Recent technical developments in the fields of quantum electromechanics and
optomechanics have spawned nanoscale mechanical transducers with the sensitivity to …

The guided and rectified motion of magnetic flux quanta are important effects governing the
magnetoresistive response of nanostructured superconductors. While at low ac frequencies …

The development of wide-area cryogenic light detectors with baseline energy resolution
lower than 20 eV RMS is essential for next generation bolometric experiments searching for …