ジョセフソンサンプリング技術

抄録

The Josephson microcircuit technology being developed for computers has also found numerous applications in analog measurements. These applications include high sensitive magnetic field detectors, voltage standards and microwave mixers. This paper focuses on the Josephson DC sampling technique and the Josephson pulse sampling technique.
These techniques having advantages of high sensitivity and high time resolution are widely applicable for ultra-fast phenomena measurements. The Josephson switching signal in the circuit chips and packaging components, the vortex signal in the Josephson transmission line and SQUID resonances are typical measured examples. This report reviews the measurement principle, the circuit design and the automatic systems for two sampling techniques. Recent examples of applications are also presented.