Electron Counting Capacitance Standard with an improved five-junction R-pump

被引：27

作者：

Camarota, Benedetta ^{[1
]}

Scherer, Hansjoerg ^{[1
]}

Keller, Mark W. ^{[2
]}

Lotkhov, Sergey V. ^{[1
]}

Willenberg, Gerd-Dietmar ^{[1
]}

Ahlers, Franz Josef ^{[1
]}

机构：

[1] PTB, D-38116 Braunschweig, Germany

[2] NIST, Boulder, CO 80305 USA

来源：

METROLOGIA | 2012年 / 49卷 / 01期

关键词：

JOSEPHSON; OPERATION; ACCURACY; TRIANGLE;

D O I：

10.1088/0026-1394/49/1/002

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Electron Counting Capacitance Standard currently pursued at PTB aims to close the Quantum Metrological Triangle with a final precision of a few parts in 107. This paper reports the considerable progress recently achieved with a new generation of single-electron tunnelling devices. A five-junction R-pump was operated with a relative charge transfer error of five electrons in 107, and was used to successfully perform single-electron charging of a cryogenic capacitor. The preliminary result for the single-electron charge quantum has an uncertainty of less than two parts in 106 and is consistent with the value of the elementary charge.

引用

页码：8 / 14

页数：7

共 25 条

[1] Direct comparison of Josephson waveforms using an AC quantum voltmeter [J].