Characterization of superconducting parametric amplifiers

Master thesis (2022)

Authors

D. zheng Applied Sciences

Contributors

C.K. Andersen Andersen Lab - AS (mentor)
L.J. Splitthoff QRD/Kouwenhoven Lab - QuTech Advanced Research Centre (mentor)
Faculty
Applied Sciences, Applied Sciences
Copyright: © 2022 Duiquan zheng
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Published Date

03-06-2022

Language

English

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Faculty

Applied Sciences

Abstract

Superconducting parametric amplifiers have been developed for fast and high
fidelity single shot readout of superconducting qubits. The nonliniarity re-
quired for those amplifiers is either based on various types of Josephson
junctions or high kinetic inductance materials. The Andersen Lab currently
develops a novel type of superconducting parametric amplifiers based on
superconducting-semiconducting hybrid nanowires, which will allow for in-
situ tuning of the amplifier characteristics with a gate voltage.
To prepare for the required performance tests of nanowire-based para-
metric amplifiers, we characterize a commercially available travelling wave
parametric amplifier in terms of 5 figures of merit: gain, bandwidth, satu-
ration power, noise temperature and quantum efficiency. We find a state of
the art amplifier performances, but also detect several hardware problems
in the measurement setup, which must be solved prior to further test. The
method implemented here can be generalized to the characterization of all
types superconducting parametric amplifiers.