Bi-SQUID versus dc SQUID in Flux Driven Traveling-Wave Parametric Amplifier

Alena N Nikolaeva; Victor K Kornev; Nikolay V. Kolotinskiy

doi:10.20944/preprints202307.0549.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 8 July 2023 / Approved: 10 July 2023 / Online: 10 July 2023 (08:45:09 CEST)

Characteristics of artificial waveguide lines composed of finite size artificial cells are analyzed and discussed with relation to designing the travelling wave parametric amplifiers. From this point of view, flux driven amplifier suggested recently can be considered as the most successful amplifier design. To increase dynamic range of the amplifier, dc SQUID cells of the artificial line in use can be substituted for bi-SQUID cells. The 1-dB compression points of the amplifier gain are calculated and compared for both types of the cells.

JTWPA; Josephson junctions; SQUID; Parametric amplifiers

Physical Sciences, Applied Physics

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Bi-SQUID versus dc SQUID in Flux Driven Traveling-Wave Parametric Amplifier

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