We have designed and fabricated a superconducting hybrid NbTiN-Al kinetic inductance detector (KID) over a broad band centered at 4.3 THz. The detector sensitivity is characterized by changing the bath temperature in a dark environment. Both amplitude and phase readouts are performed. The measured electrical noise equivalent power for phase readout is about 2.6 × 10⁻¹⁸ W · Hz^−0.5 at 200 mK. This ultra-sensitive KID, which enables large arrays with frequency domain multiplexing, is promising for imaging instruments in space-based far-infrared observatories.

中文翻译：

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用于太赫兹传感的基于 NbTiN-Al 的动态电感探测器的噪声等效功率

我们在以 4.3 THz 为中心的宽带上设计并制造了超导混合 NbTiN-Al 动感电感探测器 (KID)。检测器灵敏度的特点是在黑暗环境中改变浴温。执行振幅和相位读数。测得的相位读出的电噪声等效功率在 200 mK 时约为 2.6 × 10 ^-18 W · Hz ^{-0.5 。}这种超灵敏的 KID 能够实现具有频域多路复用的大型阵列，有望用于天基远红外天文台的成像仪器。