论文标题
完全超级导向Josephson侧强度的GIGAHERTZ天文学
Fully superconducting Josephson bolometers for gigahertz astronomy
论文作者
论文摘要
宇宙的起源和演变被隐藏在淡淡的弥漫性背景辐射（DEBRA）中。为了揭示这些信号，需要在Gigahertz频段中运行的创新超敏感剂量计的发展。在这里，我们回顾了基于一维完全超导的Josephson交界器的两个偏置可调传感器的设计和实验实现：纳米级过渡边缘传感器（Nano-TES）和Josephson Escape Sensor（JES）。特别是，我们涵盖了传感器操作的理论基础，设备制造，它们的实验电子和热表征以及推导的检测性能。的确，纳米-TE承诺将最先进的噪声当量功率（NEP）约为$ 5 \ times 10^{ - 20} $ W $/\ sqrt {\ text {hz}} $，而JES则预计将显示出未经预言的NEP的$ 10^{ - 25} $的NEP。 w $/\ sqrt {\ text {hz}} $。因此，纳米-TES和JES是强大的候选人，将射电天文学推向新的水平。
The origin and the evolution of the universe are concealed in the evanescent diffuse extragalactic background radiation (DEBRA). To reveal these signals, the development of innovative ultra-sensitive bolometers operating in the gigahertz band is required. Here, we review the design and experimental realization of two bias-current-tunable sensors based on one dimensional fully superconducting Josephson junctions: the nanoscale transition edge sensor (nano-TES) and the Josephson escape sensor (JES). In particular, we cover the theoretical basis of the sensors operation, the device fabrication, their experimental electronic and thermal characterization, and the deduced detection performance. Indeed, the nano-TES promises a state-of-the-art noise equivalent power (NEP) of about $5 \times 10^{-20}$ W$/\sqrt{\text{Hz}}$, while the JES is expected to show an unprecedented NEP of the order of $10^{-25}$ W$/\sqrt{\text{Hz}}$. Therefore, the nano-TES and JES are strong candidates to push radio astronomy to the next level.
