Abstract

Photon-assisted AC transport through coherently driven mesoscopic systems has been studied by employing a transfer-matrix method. For a driven double-barrier system as a simple model of a quantum dot, we show that the AC current due to quantum interference between different sideband states depends on wavenumbers of electrons and exhibits sideband peaks. We also suggest that such AC currents can be observed in a driven mesoscopic ring which provides a novel type of photon-assisted tunneling.

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