8 papers
Superconducting NbN Resonator Parametric Amplifiers for Millimetre Wavelengths
Songyuan Zhao, Stafford Withington, Christopher Thomas
We report the development of a reactive sputtering process for high NbN films with high normal-state resistivity, tailored for kinetic inductance parametric amplifie…
Non-degenerate pumping of superconducting resonator parametric amplifier with evidence of phase-sensitive amplification
Songyuan Zhao, Stafford Withington, Christopher Thomas
Superconducting resonator parametric amplifiers are potentially important components for a wide variety of fundamental physics experiments and utilitarian applications. We propose…
Energy Absorption Interferometry
Stafford Withington, Willem Jellema
Energy Absorption Interferometry (EAI) is a technique for measuring the responsivities and complex-valued spatial polarimetric forms of the individual degrees of freedom through wh…
Superconducting Ring Resonators: Modelling, Simulation, and Experimental Characterisation
Zhenyuan Sun, Stafford Withington, Christopher Thomas +1
We present a theoretical and experimental study of superconducting ring resonators as an initial step toward their implementation in superconducting electronics and quantum technol…
Determining Absolute Neutrino Mass using Quantum Technologies
A. A. S. Amad, F. F. Deppisch, M. Fleck +19
Next generation tritium decay experiments to determine the absolute neutrino mass require high-precision measurements of -decay electron energies close to the kinematic end poi…
Superconducting resonator parametric amplifiers with intrinsic separation of pump and signal tones
Songyuan Zhao, Stafford Withington, Christopher Niall Thomas
Superconducting resonator parametric amplifiers achieve ultra-low-noise amplification through the nonlinear kinetic inductance of thin-film superconductors. One of the main challen…