|Instituto de Ciencia de Materiales de Madrid|
|Condensed Matter Theory|
|Sigmund Kohler||home | cv | research | publications|
Nonadiabatic electron pumping: Maximal current with minimal noiseMichael Strass, Peter Hänggi, and Sigmund Kohler
Phys. Rev. Lett. 95, 130601 (2005)
The noise properties of pump currents through an open double-quantum-dot setup with nonadiabatic ac driving are investigated. Driving frequencies close to the internal resonances of the double-dot system mark the optimal working points at which the pump current assumes a maximum while its noise power possesses a remarkably low minimum. A rotating-wave approximation provides analytical expressions for the current and its noise power and allows to optimize the noise characteristics. The analytical results are compared to numerical results from a Floquet transport theory.
[Condensed Matter Theory]
last modified: 23.11.2017 by Sigmund Kohler