Suppressed-gap millimetre wave kinetic inductance detectors using DC-bias current

Suppressed-gap millimetre wave kinetic inductance detectors using DC-bias current
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使用直流偏置电流的抑制间隙毫米波动感电感探测器

DOI:
10.1088/1361-6463/ab8d6d
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Zhao S
Zhao S
中科院分区:
--
文献类型:
--
作者:
Zhao S

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在这项研究中,我们评估的适用性,使用直流偏置铝谐振器的低频动态电感探测器能够在50-120 GHz的频率范围内工作。我们的分析程序的超导偏置谐振器是基于Usadel方程,并给出输出,包括态密度,复电导率,传输线的属性,和准粒子的寿命。从我们的分析结果证实了以前的实验观察谐振频率调谐和高品质因数的保留。最重要的是,我们的分析表明,直流偏置谐振器表现出显着抑制超导态密度间隙。因此,这些谐振器具有较低的频率检测阈值,是低频动态电感检测器的合适材料。
In this study, we evaluate the suitability of using DC-biased aluminium resonators as low-frequency kinetic inductance detectors capable of operating in the frequency range of 50–120 GHz. Our analysis routine for supercurrent-biased resonators is based on the Usadel equations and gives outputs including density of states, complex conductivities, transmission line properties, and quasiparticle lifetimes. Results from our analysis confirm previous experimental observations on resonant frequency tuneability and retention of high quality factor. Crucially, our analysis suggests that DC-biased resonators demonstrate significantly suppressed superconducting density of states gap. Consequently these resonators have lower frequency detection threshold and are suitable materials for low-frequency kinetic inductance detectors.
蓝宝石上 10-100-Ω 微带线的 2-18-GHz 色散测量
DOI: --
发表时间: 1976
期刊:
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