基于SNS型双路约瑟夫森结阵驱动方法研究

doi:10.3969/j.issn.1000-1158.2020.03.04

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Abstract According to the driving principle of SNS type two-way Josephson junction and the segmentation characteristics of the array, a balanced ternary driving algorithm was proposed to realize the fast calculation of the bias state of the two-way Josephson junction array.According to the bias state and combination of Josephson junction array, the voltage value of the two-way step wave AC quantum voltage was accurately synthesized by using the node voltage method.Finally, AC quantum voltage output with a minimum resolution of 2 knots and a valid bit of 15 bits was realized.The results of two-way AC quantum voltage mutual test showed that the maximum error of the synthesized AC quantum voltage was 0.06μV, and the phase difference between the two channels was 0.02μrad, which proved that the synthesized two-way AC quantum voltage has high amplitude accuracy and good phase synchronization.

Key words： metrology quantum voltage SNS type two-way Josephson junction array balanced ternary node voltage method

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TB971

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	Articles by authors
	ZHOU Tian-di
	JIA Zheng-sen
	WANG Lei
	XU Xi-tong
	PAN Xian-lin
	SHI Zhao-min

Cite this article:

ZHOU Tian-di,JIA Zheng-sen,WANG Lei, et al. Division of Electricity and Magnetism, National Institute of Metrology, Beijing 100029, China[J]. Acta Metrologica Sinica, 2020, 41(3): 290-295.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.03.04 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I3/290

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