论文标题
使用DC偏置电流抑制间隙毫米波动感检测器
Suppressed-gap millimetre wave kinetic inductance detectors using DC-bias current
论文作者
论文摘要
在这项研究中，我们评估使用DC偏置铝谐振器作为在50-120 GHz频率范围内运行的低频动力电感检测器的适用性。我们对超电流偏置谐振器的分析程序基于USADEL方程，并提供包括状态密度，复杂导电性，传输线特性和准粒子寿命的输出。我们的分析结果证实了先前关于共振频率可调性和高质量因子的保留的实验观察结果。至关重要的是，我们的分析表明，直流偏置的谐振器表现出明显抑制状态间隙密度的超导密度。因此，这些谐振器具有较低的频率检测阈值，并且是低频动力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 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.
