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

Published

November 7, 2011

Author(s)

Benedetta Camarota, Hansjoerg Scherer, Sergey Lotkhov, Gerd-Dietmar Willenberg, Franz Josef Ahlers, Mark W. Keller

Abstract

The Electron Counting Capacitance Standard currently pursued at PTB, aims at the closure of 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 tunneling 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.

Citation

Metrologia

Volume

49

Issue

1

Pub Type

Journals

Download Paper

DOI Link

Keywords

single-electron tunneling, quantum metrology triangle, capacitance standard

Citation

Camarota, B. , Scherer, H. , Lotkhov, S. , Willenberg, G. , Ahlers, F. and Keller, M. (2011), Electron Counting Capacitance Standard with an improved five-junction R-pump, Metrologia, [online], https://doi.org/10.1088/0026-1394/49/1/002 (Accessed October 8, 2025)