329 citations · 976 across the 16 of their papers we have counts for
16 papers
Engineering the microwave to infrared noise photon flux for superconducting quantum systems
Sergey Danilin, João Barbosa, Michael Farage +6
Electromagnetic filtering is essential for the coherent control, operation and readout of superconducting quantum circuits at milliKelvin temperatures. The suppression of spurious…
Quantum efficiency, purity and stability of a tunable, narrowband microwave single-photon source
Yong Lu, Andreas Bengtsson, Jonathan J. Burnett +7
We demonstrate an on-demand source of microwave single photons with 71--99\% intrinsic quantum efficiency. The source is narrowband (300\unite{kHz}) and tuneable over a 600 MHz ran…
Pulsed Electron Spin Resonance of an Organic Microcrystal by Dispersive Readout
Ailsa Keyser, Jonathan Burnett, Sergey Kubatkin +4
We establish a testbed system for the development of high-sensitivity Electron Spin Resonance (ESR) techniques for small samples at cryogenic temperatures. Our system consists of a…
Stability of superconducting resonators: motional narrowing and the role of Landau-Zener driving of two-level defects
David Niepce, Jonathan J. Burnett, Marina Kudra +2
Frequency instability of superconducting resonators and qubits leads to dephasing and time-varying energy-loss and hinders quantum-processor tune-up. Its main source is dielectric…
High Quality 3-Dimensional Aluminum Microwave Cavities
M. Kudra, J. Biznárová, F. Roudsari +5
We present a comprehensive study of internal quality factors in superconducting stub-geometry 3-dimensional cavities made of aluminum. We use wet etching, annealing and electrochem…
Two-level systems in superconducting quantum devices due to trapped quasiparticles
S. E. de Graaf, L. Faoro, L. B. Ioffe +6
A major issue for the implementation of large scale superconducting quantum circuits is the interaction with interfacial two-level system defects (TLS) that leads to qubit relaxati…