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| The Status of AC Quantum Voltage Standards |
| ZHOU Kun-li1,2,QU Ji-feng2,ZHANG Zhong-hua2,ZHAO Wei1 |
1. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
2. National Institute of Metrology, Beijing 100029, China |
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Abstract Compared to the conventional voltage standards, Josephson voltage standards are more reproducible, stable and accurate. The principles, problems and applications of programmable Josephson voltage standards and pulse-driven AC Josephson voltage standards are reviewed. Moreover, their differences in metrological performance are compared and their developments in China are also presented.
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Received: 08 October 2016
Published: 16 June 2017
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2017, Vol. 38 
