Robustness of single-electron pumps at sub-ppm current accuracy level. (20th December 2016)

• Record Type: Journal Article
• Authors: Stein, F; Scherer, H; Gerster, T; Behr, R; Götz, M; Pesel, E; Leicht, C; Ubbelohde, N; Weimann, T; Pierz, K; Schumacher, H W; Hohls, F
• Is Part Of: Metrologia. Volume 54:Number 1(2017:Feb.)
• Page Start: S1
• Page End: S8
• Publication Date: 2016-12-20
• Subjects: single-electron pump -- electron transfer -- quantum current standard -- QD electron pump; Weights and measures -- Periodicals; Weights and Measures -- Periodicals; 530.805
• DOI: 10.1088/1681-7575/54/1/S1
• Languages: English
• ISSNs: 0026-1394

Abstract

Abstract: We report on characterizations of single-electron pumps at the highest accuracy level, enabled by improvements of the small-current measurement technique. With these improvements a new accuracy record in measurements on single-electron pumps is demonstrated: 0.16 µA · A −1 of relative combined uncertainty was reached within less than 1 d of measurement time. Additionally, robustness tests of pump operation on a sub-ppm level revealed a good stability of tunable-barrier single-electron pumps against variations in the operating parameters.