Demonstration of a microwave SQUID multiplexer with pre-amplification from a kinetic inductance traveling-wave parametric amplifier
Demonstration of a microwave SQUID multiplexer with pre-amplification from a kinetic inductance traveling-wave parametric amplifier
复制标题
演示具有动态电感行波参量放大器预放大功能的微波 SQUID 多路复用器
作者：
M. Vissers;M. Malnou;Jiansong Gao;J. Hubmayr;J. Wheeler;J. Mates;B. Dober;G. Hilton;L. Vale;J. Ullom
目前正在研制用于大型低温探测器阵列读出的动态电感行波参量放大器。我们提出了新的KIT设计的基础上20纳米NbTiN薄膜图案化使用标准的光学光刻。我们报告设备的增益，带宽和噪声特性，接近量子极限。此外，我们还展示了一个微波SQUID多路复用器的KIT晶体管。与标准HEMT读出相比，改进的输入参考电流噪声为低温接收器开辟了新的可能性。我们讨论这些好处。
Kinetic inductance traveling-wave parametric amplifiers (KITs) are under development for the read out of large cryogenic detector arrays. We present new KIT designs based on 20nm NbTiN films patterned by use of standard optical photolithography. We report device gain, bandwidth, and noise properties, which approach the quantum limit. In addition, we demonstrate a KIT preamplifier with a microwave SQUID multiplexer. The improved input referred current noise, as compared to standard HEMT readout, opens up new possibilities for cryogenic receivers. We discuss these benefits.