Rare errors in a well-characterized electron pump: Comparison of experiment and theory

被引：60

作者：

Keller, MW ^{[1
]}

Martinis, JM ^{[1
]}

Kautz, RL ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Boulder, CO 80303 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.80.4530

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By measuring each junction of an electron pump in a single electron box configuration, we determine all quantities needed to test the standard theory of pumping error and leakage. Background charges are determined with an imprecision of +/-0.01e. Electron temperature is measured to 40 mK. Measured charging energies show all junctions have nearly the same capacitance. We find agreement with theory at 140 mK, but a disagreement of many orders of magnitude at 30 mK. We suggest that the excess error and leakage at 40 mK are due to photon-assisted cotunneling processes not included in the standard theory.

引用

页码：4530 / 4533

页数：4

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