M. I. Dykman

Characterizing low-frequency qubit noise

2022 · arXiv (Cornell University)

Fluctuations of the qubit frequencies are one of the major problems to overcome on the way to scalable quantum computers. Of particular importance are fluctuations with the correlation time that exceeds the decoherence time due …

Josephson parametric amplifier with Chebyshev gain profile and high saturation

2023 · Physical Review Applied

We demonstrate a Josephson parametric amplifier design with a band-pass impedance-matching network based on a third-order Chebyshev prototype. We measured eight amplifiers operating at 4.6 GHz that exhibit gains of 20 dB with less than …