Development of 0.5-V Josephson junction array devices for quantum voltage standards
Wang Lanruo1, Li Jinjin2, 3, †, Cao Wenhui2, 3, Zhong Yuan2, 3, Zhang Zhonghua2, 3
       

Measurement results of 20 comparisons between V NIM 0.5 V and V NIST 10 V . The difference of the reproduced quantum voltage between the two devices is 0.55 nV, with a 1.6-nV uncertainty.