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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…
Geometric Scaling of Two-Level-System Loss in Superconducting Resonators
David Niepce, Jonathan Burnett, Martí Gutierrez Latorre +1
We perform an experimental and numerical study of dielectric loss in superconducting microwave resonators at low temperature. Dielectric loss, due to two-level systems, is a limiti…
On the Angular Dependence of InP High Electron Mobility Transistors for Cryogenic Low Noise Amplifiers in a Magnetic Field
Isabel Harrysson Rodrigues, David Niepce, Arsalan Pourkabirian +4
The InGaAs-InAlAs-InP high electron mobility transistor (InP HEMT) is the preferred active device used in a cryogenic low noise amplifier (LNA) for sensitive detection of microwave…