Fluctuation theorem for a double quantum dot coupled to a point-contact electrometer

被引：30

作者：

Golubev, D. S. ^{[1
]}

Utsumi, Y. ^{[2
]}

Marthaler, M. ^{[3
]}

Schoen, Gerd ^{[1
,3
,4
]}

机构：

[1] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[2] Mie Univ, Dept Engn Phys, Fac Engn, Tsu, Mie 5148507, Japan

[3] Karlsruhe Inst Technol, Inst Theoret Festkorperphys, D-76128 Karlsruhe, Germany

[4] Karlsruhe Inst Technol, DFG Ctr Funct Nanostruct CFN, D-76128 Karlsruhe, Germany

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 07期

基金：

日本科学技术振兴机构;

关键词：

COUNTING STATISTICS; 2ND LAW; DYNAMICS; VIOLATIONS;

D O I：

10.1103/PhysRevB.84.075323

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study single-electron transport through a double quantum dot (DQD) monitored by a capacitively coupled quantum point-contact (QPC) electrometer. We derive the full counting statistics for the coupled DQD-QPC system and obtain the joint probability distribution of the charges transferred through the DQD and the QPC consistent with the fluctuation theorem. The system can be described by a master equation with tunneling rates depending of the counting fields and satisfying a generalized local detailed-balance relation. Furthermore, we derive universal relations between the nonlinear corrections to the current and noise, which can be verified in experiment.

引用

页数：10

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