Four wave-mixing in a microstrip kinetic inductance travelling wave parametric amplifier

Samuel Goldstein; Naftali Kirsh; Elisha Svetitsky; Yuval Zamir; Ori Hachmo; Clovis Eduardo Mazzotti De Oliveira; Nadav Katz

doi:10.1063/5.0004236

Four wave-mixing in a microstrip kinetic inductance travelling wave parametric amplifier

Samuel Goldstein^*, Naftali Kirsh, Elisha Svetitsky, Yuval Zamir, Ori Hachmo, Clovis Eduardo Mazzotti De Oliveira, Nadav Katz

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Superconducting quantum circuits are typically operated at low temperatures (mK), necessitating cryogenic low-noise, wideband amplifiers for signal readout ultimately also compatible with room temperature electronics. While existing implementations partly meet these criteria, they suffer from certain limitations, such as rippled transmission spectra or limited dynamic range, some of which are caused by the lack of proper impedance matching. We develop a microstrip kinetic inductance traveling wave amplifier, exploiting the nonlinear kinetic inductance of tungsten-silicide for wave-mixing of the signal and a pump, and engineer the impedance to 50 ω, while decreasing the phase velocity, with benefit for the amplification. Despite losses, pumping on our device amplifies the signal by 15 dB over a 2 GHz bandwidth.

Original language	English
Article number	04236
Journal	Applied Physics Letters
Volume	116
Issue number	15
DOIs	https://doi.org/10.1063/5.0004236
State	Published - 13 Apr 2020

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AU - De Oliveira, Clovis Eduardo Mazzotti

AU - Katz, Nadav

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Four wave-mixing in a microstrip kinetic inductance travelling wave parametric amplifier

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