Shot Noise of a Quantum Shuttle
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
We formulate a theory for shot noise in quantum nanoelectromechanical systems. As a specific example, the theory is applied to a quantum shuttle, and the zero-frequency noise, measured by the Fano factor F, is computed. F reaches very low values (F~0.01) in the shuttling regime even in the quantum limit, confirming that shuttling is universally a low noise phenomenon. In approaching the semiclassical limit, the Fano factor shows a giant enhancement (F~100) at the shuttling threshold, consistent with predictions based on phase-space representations of the density matrix.
Keywords
Cite
@article{arxiv.cond-mat/0402597,
title = {Shot Noise of a Quantum Shuttle},
author = {Tomas Novotny and Andrea Donarini and Christian Flindt and Antti-Pekka Jauho},
journal= {arXiv preprint arXiv:cond-mat/0402597},
year = {2007}
}
Comments
4 pages, 2 figures; minor formal changes - updated figures and references; final version as published in Phys. Rev. Lett