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Two-stage SQUID amplifier with bias current re-use

2020/12/30 by M. Kiviranta, Kiviranta, Mikko
Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Physics of Superconductivity and Magnetism #Semiconductor Quantum Structures and Devices #Superconducting and THz Device Technology

paper · pdf · doi:10.48550/arxiv.2012.15362

openalex publication_date 2020/12/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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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