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Instituto de Ciencia de Materiales de Madrid |
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| Condensed Matter Theory | |||||
| Sigmund Kohler | home | cv | research | publications | ||||
Nonadiabatic electron pumping: Maximal current with minimal noiseMichael Strass, Peter Hänggi, and Sigmund KohlerPhys. 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. arXiv:cond-mat/0505079 |
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last modified: 18.11.2024 by
Sigmund Kohler