3 papers
quant-ph2026
Optimizing Pump Conditions of Parametric Amplifiers for Fast Multiplexed Readout of Superconducting Qubits
Jeongwon Kim, Wei Dai, Omrie Ovdat +3
Low-noise parametric amplifiers are widely used as the first-stage amplifier in qubit readout chains. The performance of parametric amplifiers depends sensitively on the choice of…
quant-ph2025
Optimizing the pump coupling for a three-wave mixing Josephson parametric amplifier
Wei Dai, Gangqiang Liu, Vidul Joshi +4
Josephson element-based parametric amplifiers (JPAs) typically require rf pump power that is several orders of magnitude stronger than the maximum signal power they can handle. The…
quant-ph2025
Lumped-element broadband SNAIL parametric amplifier with on-chip pump filter for multiplexed readout
V. R. Joshi, S. Hazra, A. Z. Ding +7
We present a SNAIL-based parametric amplifier that integrates a lumped-element impedance matching network for increased bandwidth and an on-chip pump-port filter for efficient pump…