High-order cumulants in the counting statistics of asymmetric quantum dots

被引：37

作者：

Fricke, Christian ^{[1
]}

Hohls, Frank ^{[1
]}

Sethubalasubramanian, Nandhavel ^{[1
]}

Fricke, Lukas ^{[1
]}

Haug, Rolf J. ^{[1
]}

机构：

[1] Leibniz Univ Hannover, Inst Festkorperphys, D-30167 Hannover, Niedersachsen, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 20期

关键词：

higher order statistics; quantum dots; quantum point contacts; tunnelling; SHOT-NOISE; OSCILLATIONS; OXIDATION; STATES;

D O I：

10.1063/1.3430000

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of single electron tunneling through a quantum dot (QD) using a quantum point contact as charge detector have been performed for very long time traces with very large event counts. This large statistical basis is used for a detailed examination of the counting statistics for varying symmetry of the QD system. From the measured statistics we extract high order cumulants describing the distribution. Oscillations of the high order cumulants are observed when varying the symmetry. We compare this behavior to the observed oscillation in time dependence and show that the variation in both system variables lead to the same kind of oscillating response. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3430000]

引用

页数：3

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