Recent progress of superconducting electronics in China
Authors: Li Chun-Guang , Wang Jia , Wu Yun , Wang Xu , Sun Liang , Dong Hui , Gao Bo , Li Hao , You Li-Xing , Lin Zhi-Rong , Ren Jie , Li Jing , Zhang Wen , He Qing , Wang Yi-Wen , Wei Lian-Fu , Sun Han-Cong , Wang Hua-Bing , Li Jin-Jin , Qu Ji-Feng ,   State Key Laboratory of Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China,   CAS Center for Excellence in Superconducting Electronics, Shanghai 200050, China,   Songshan Lake Materials Laboratory, Dongguan 523808, China,   State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China,   Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China,   School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China,   School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China,   College of Science, Donghua University, Shanghai 210031, China,   Research Institute of Superconductor Electronics, Nanjing University, Nanjing 210046, China,   Purple Mountain Laboratories, Nanjing 211111, China,   National Institute of Metrology, Beijing 100029, China
Published: December 2020

It has been nearly 110 years since the discovery of superconductors, and more than 30 years since the discovery of high temperature superconductors (HTS). Great progress has been made in the application of superconducting electronics in the last two decades. HTS microwave devices have shown much higher perfomance than the traditional ones and have found their ways to the industry applications in mobile communication, radar, and special communication applications. Owing to the ultrahigh sensitivity to magnetic fields and currents, superconducting quantum interference devices (SQUIDs) have been used as the irresplacible sensors in geological surveying, magnetic resonanc imaging, biomagnetic imaging, and other areas. The sensitivity of superconducting radiation detectors such as superconducting SIS mixer, superconducting hot electron bolometer, superconducting transition edge sensor, superconducting nanowire single photon detector, and superconducting microwave kinetic inductance detector are near the quantum limitation. They are now key technology in geophysics, astrophysics, quantum information science, biomedicine, and so on. Superconducting Josephson parametric amplifier has become a key element for superconducting quantum computing. Superconducting integrated circuit has been included in the international roadmap for devices and systems, and shows that having the potential to become one of the mainstreams for post-Moore information processing technology. In metrology, superconducting Josephson effect and Josephson junction array devices have been widely used in the redefinition of quantum voltage reference and basic units of the International system of Units. Superconducting electronics plays an important role in the current quantum information technology boom, which in turn promotes the development of superconducting electronics. This review will brief introduce the research and application of superconducting electronics in China in recent years.