Shot Noise of a Quantum Shuttle

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.

4 pages, 2 figures; minor formal changes - updated figures and references; final version as published in Phys. Rev. Lett

References in corpus (1)

• Low frequency current noise of the single-electron shuttle

Cited by in corpus (7)

• Franck-Condon blockade and giant Fano factors in transport through single molecules
• Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
• Full counting statistics of nano-electromechanical systems
• Current-induced nonequilibrium vibrations in single-molecule devices
• Current noise in a vibrating quantum dot array
• The charge shuttle as a nanomechanical ratchet
• Dynamics of Shuttle Devices