Measurements of DC SQUID Damping Effects on Superconducting Resonant Circuits

被引：0

作者：

van Assendelft, E. C. ^{[1
]}

Cho, H. -M ^{[2
]}

Corbin, J. ^{[1
]}

Kuenstner, S. ^{[1
]}

Li, D. ^{[2
]}

Phipps, A. ^{[3
]}

Rapidis, N. M. M. ^{[1
]}

Singh, J. ^{[1
]}

Wells, K. ^{[1
]}

Irwin, K. D. ^{[1
]}

机构：

[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[2] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[3] Cal State East Bay, Dept Phys, Hayward, CA 94542 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2023年 / 33卷 / 05期

关键词：

SQUIDs; circuits; superconducting resonators;

D O I：

10.1109/TASC.2023.3261261

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present experimental measurements of SQUID-induced damping effects on strongly coupled, lumped-element resonators in the 500kHz-1 MHz frequency range. While dc SQUIDs are commonly used for sensitive readout of electromagnetic signals such as in lumped-element axion dark matter searches, coupling a dc SQUID to a resonant circuit modifies the circuit's resonance frequency, quality factor, noise, and impedance. These parameters have a direct impact on the science reach of axion dark matter detectors, making it important to understand SQUID damping contributions. We describe a helium dip probe and two-stage SQUID readout scheme used to probe SQUID damping effects. Measurements from this setup inform the design and operation of both future test platforms as well as next-generation dark-matter experiments.

引用

页数：6

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