Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise
- The noise properties of pump currents through an open double quantum dot setup with non-adiabatic 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.
| Author: | Michael StrassGND, Peter HänggiORCiDGND, Sigmund KohlerORCiDGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-2715 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/337 |
| Type: | Preprint |
| Language: | English |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2006/09/01 |
| Tag: | mesoscopic systems; random noise; semiconductor quantum dots |
| GND-Keyword: | Rauschen; Quantenpunkt; Halbleiter; Floquet-Theorie; Mesoskopisches System |
| Source: | erschienen in: Phys. Rev. Lett. 95, 130601 (2005); DOI: 10.1103/PhysRevLett.95.130601; URL: http://link.aps.org/abstract/PRL/v95/e130601 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik I | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
