Shot noise of a quantum shuttle

Tomas Novotny, Andrea Donarini, Christian Flindt, Antti-Pekka Jauho

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    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 (Fsimilar or equal to10(-2)) 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 (Fsimilar or equal to10(2)) at the shuttling threshold, consistent with predictions based on phase-space representations of the density matrix.
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number24
    Pages (from-to)248302
    Publication statusPublished - 2004

    Bibliographical note

    Copyright (2004) American Physical Society.


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