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Two-stage SQUID amplifier with bias current re-use (2012.15362v1)
Published 30 Dec 2020 in physics.ins-det and astro-ph.IM
Abstract: We have designed and fabricated an integrated two-stage SQUID amplifier, requiring only one bias line and one flux setpoint line. From the biasing viewpoint the two stages are connected in series while from the signal propagation viewpoint the stages are cascaded. A proof-of principle demonstration at T = 4.2 K is presented.
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