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.
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页数：6
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