Charge transport through a molecule driven by a high-frequency field

Abstract

We study the current and the associated noise for the transport through a two-site molecule driven by an external oscillating field. Within a high-frequency approximation, the time-dependent Hamiltonian is mapped to a static one with effective parameters that depend on the driving amplitude and frequency. This analysis allows an intuitive physical picture explaining the nontrivial structure found in the noise properties as a function of the driving amplitude. The presence of dips in the Fano factor permits a control of the noise level by means of an appropriate external driving.

15 pages, 5 figures, elsart style

References in corpus (4)

• Shot Noise in Mesoscopic Conductors
• Driving current through single organic molecules
• Current Noise in ac-Driven Nanoscale Conductors
• Laser controlled molecular switches and transistors

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• Improving the purity of one- and two-qubit gates by AC fields