10 V可编程约瑟夫森结阵特性与激励系统研究  

Research on 10 V Programmable Josephson Array and Its Bias Current System

作　　者：王曾敏[1] 李红晖[1] 段梅梅 吴然 王思云 廖福剑 王磊[1] WANG Zengmin;LI Honghui;DUAN Meimei;WU Ran;WANG Siyun;LIAO Fujian;WANG Lei(National Institute of Metrology,Beijing 100029,China;Marketing Service Center,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing,Jiangsu 210000,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]国网江苏省电力有限公司营销服务中心,江苏南京210000

出　　处：《计量学报》2025年第1期99-105,共7页Acta Metrologica Sinica

基　　金：国家电网公司科技项目(5700-202218217A-1-1-ZN)。

摘　　要：研究了10 V可编程约瑟夫森结阵的结构和低温超导特性,分析了10 V可编程结阵的激励算法和激励系统结构,提出了数字多用表的结阵超导特性扫描方法,与传统基于示波器的观测方法相比,大幅提升了结阵超导特性扫描和评估的准确性。实验结果表明,各子阵列的临界电流均大于4 mA,在注入微波后,各子阵列正向和负向量子电压台阶宽度均大于1.5 mA,设计和研制的10 V可编程结阵激励和超导特性扫描系统,能够较好地为10 V约瑟夫森结阵提供激励,为开展无液氦10 V量子电压系统的研究奠定了基础。The structure of a 10 V programmable Josephson junction array and its superconducting characteristics was researched in detail.The bias algorithm and the bias electronics of the 10 V programmable Josephson array were studied.A new I-V curve scanning method by using a digital voltmeter instead of the oscilloscope was proposed,which greatly improves the evaluation accuracy of the superconducting characteristics.The experimental results showed that the critical current of each subarray was greater than 4 mA,and the minimum quantum voltage step width of each subarray is 1.5 mA,which is important for the research of cryocooled 10 V quantum voltage system.

关 键 词：电学计量 量子电压标准 10 V可编程约瑟夫森结阵 结阵激励系统 结阵超导特性 

分 类 号：TB971[一般工业技术—计量学]