Developing Josephson junction array chips for microvolt applications

doi:10.1088/1674-1056/25/5/057401

Abstract Josephson junction array chips for microvolt applications have been designed and fabricated. A voltage step as small as 1 μV has been observed for a single junction in the array when it is driven by 483.59 MHz microwave. By selecting different parts of the array, it can output a voltage from 1 μV to 256 μV. The flat region of the voltage steps is over 200 μA. This kind of array is useful for potential microvolt applications.

Keywords: Josephson junction arrays voltage standard niobium

Received: 24 December 2015
Revised: 15 January 2016
Accepted manuscript online:

PACS:	74.81.Fa	(Josephson junction arrays and wire networks)
	06.20.fb	(Standards and calibration)
	74.70.-b	(Superconducting materials other than cuprates)

Fund: Project supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (Grant No. 2011BAK15B00), the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61401418), and the Basic Research Foundation of National Institute of Metrology of China (Grant No. 20-AKY1415).

Corresponding Authors: Wenhui Cao
E-mail: caowh@nim.ac.cn;jinjinli@nim.ac.cn

Cite this article:

Wenhui Cao(曹文会), Jinjin Li(李劲劲), Yuan Zhong(钟源), Yuan Gao(高原), Honghui Li(李红晖), Zengmin Wang(王曾敏), Qing He(贺青) Developing Josephson junction array chips for microvolt applications 2016 Chin. Phys. B 25 057401

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