RF single electron transistor readout amplifiers for superconducting astronomical detectors of X-ray to sub-mm wavelengths
RF single electron transistor readout amplifiers for superconducting astronomical detectors of X-ray to sub-mm wavelengths
复制标题
用于 X 射线至亚毫米波长超导天文探测器的射频单电子晶体管读出放大器
DOI：
10.1109/77.919439
复制
发表时间：
2001
影响因子：
1.8
通讯作者：
C. Stahle
中科院分区：
文献类型：
--
作者：
T. Stevenson;A. Aassime;P. Delsing;R. Schoelkopf;K. Segall;C. Stahle
我们已经制造了具有大输入门的射频单电子晶体管（RF-SETs），并测试了性能和操作模式，目的是将诸如片上放大器之类的器件用于各种高阻抗低温光电探测器。我们为电荷锁环和跨阻放大器反馈配置实现了/spl ap/100 kHz的闭环带宽，并使用波分复用形式组合了放大器输出。在我们选择SET结电阻的情况下，0.5 fF输入栅极电容的电荷噪声为1/spl倍/10/sup -4/ e//spl径向/Hz，但输入电压噪声相当低，为30 nV//spl径向/Hz。
We have made Radio-Frequency Single-Electron Transistors (RF-SETs) with large input gates, and tested performance and modes of operation with the goal of using such devices as on-chip amplifiers for a variety of high impedance cryogenic photodetectors. We achieved /spl ap/100 kHz of closed-loop bandwidth for charge-locked-loop and transimpedance amplifier feedback configurations, and have combined amplifier outputs using a form of wavelength division multiplexing. With our choice of SET junction resistance, a 0.5 fF input gate capacitance gave a cotunneling-degraded charge noise of 1/spl times/10/sup -4/ e//spl radic/Hz, but a fairly low input voltage noise of 30 nV//spl radic/Hz.