Frequency-dependent counting statistics in interacting nanoscale conductors

被引：80

作者：

Emary, C. ^{[1
]}

Marcos, D. ^{[2
]}

Aguado, R. ^{[2
]}

Brandes, T. ^{[1
]}

机构：

[1] Inst Theoret Phys, D-10623 Berlin, Germany

[2] Inst Ciencia Mat, Dept Teor Mat Condensada, Madrid 28049, Spain

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.76.161404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a formalism to calculate finite-frequency current correlations in interacting nanoscopic conductors. We work within the n-resolved density matrix approach and obtain a multitime cumulant generating function that provides the fluctuation statistics solely from the spectral decomposition of the Liouvillian. We apply the method to the frequency-dependent third cumulant of the current through a single resonant level and through a double quantum dot. Our results, which show that deviations from Poissonian behavior strongly depend on frequency, demonstrate the importance of finite-frequency higher-order cumulants in fully characterizing transport.

引用

页数：4

共 27 条

[1] Shot noise spectrum of open dissipative quantum two-level systems [J].