高温超导约瑟夫森结技术及应用于液氮温区量子电压标准的可能性  

High-temperature superconducting Josephson junction technology and its potential application to quantum voltage standards in liquid nitrogen temperature range

作　　者：陈紫雯 朱珠 康焱 焦玉民 张力丹 张焱 马平[2,3,4] CHEN Ziwen;ZHU ZhuKANG Yan;JIAO Yumin;ZHANG Lidan;ZHANG Yan;MA Ping(Beijng Institute of Radio Metrology&Measurement,Beijing 100039,China;Applied Superconductivity Research center,Peking University,Beijing 100871,China;State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,Peking University,Beijing 100871,China;School of Physics,Peking University,Beijing 100871,China)

机构地区：[1]北京无线电计量测试研究所,北京100039 [2]北京大学应用超导研究中心,北京100871 [3]北京大学,人工微结构和介观物理全国重点实验室,北京100871 [4]北京大学物理学院,北京100871

出　　处：《物理学报》2025年第9期35-47,共13页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61571019);国家重点研发计划(批准号:2020YFF01014706,2017YFC0601901);2024年北京大学“仪器创制与关键技术研发”项目资助的课题.

摘　　要：本文对液氮温区约瑟夫森电压标准的物理原理、相关应用研究的发展历史、研究现状以及未来发展方向进行了综述.液氮温区工作的约瑟夫森电压标准具有移动性强、能耗小等特点,便于应用推广.本文描述了目前约瑟夫森量子电压标准的研究现状,重点探讨了基于高温超导体发展液氮温区量子电压标准可能性,以及目前在芯片制备方面存在的各种挑战.在此基础上,介绍了超导约瑟夫森结阵列的一种新型制备技术,即聚焦氦离子辐照技术,其在高一致性约瑟夫森结阵列的制备上可能具有优势,是未来探索实现液氮温区量子电压计量标准的一种可能技术路线.This paper reviews the physical principles,development history of related application research,current research status and prospects of the Josephson voltage standard(JVS)working at liquid helium temperatures.The JVS working at liquid helium temperature has advantages of high mobility and low-energy consumption,and has a broad application prospect.This paper describes the research status of Josephson voltage standards,focusing on the possibility of developing a JVS based on high-temperature superconductors,and the challenges in chip preparation.In addition,a newly developed preparation technology for Josephson junction,namely the focused helium ion beam,is introduced.It has advantages in the preparation of high consistent Josephson junction arrays in high consistency.Therefore,it is a possible technical route for exploring the realization of JVS working at liquid helium temperature in the future.

关 键 词：约瑟夫森效应 约瑟夫森电压标准 高温超导体 电压精密测量 

分 类 号：O4-33[理学—物理]