交流约瑟夫森电压合成装置的研究

摘要

A Josephson arbitrary waveform synthesizer( JAWS)is developed for synthesizing the AC Josephson voltage with the amplitude up to 1. 2 V and the frequency up to 200 Hz. The experimental results show that Josephson ac voltage up to 200 Hz can be synthesized successfully and the uncertainty of synthesized 60 Hz waveform is less than 5 parts in 106. This research is the first step for to the establishment of our national AC Josephson voltage standard.%设计制作了一套交流约瑟夫森电压合成装置(JAWS),能够驱动1 V SINIS型可编程约瑟夫森结阵合成峰值1.2V、200Hz以下频率的交流量子电压.实验结果表明,该装置能够合成200 Hz以下频率的交流量子电压,且合成60Hz交流电压的不确定度优于5×10-6,为进一步开展我国首个交流量子电压基准的研究工作奠定了基础.