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Coherent photon assisted cotunneling in a Coulomb blockade device

Karsten Flensberg

cond-mat.mes-hallarXiv:cond-mat/9607139

Abstract

We study cotunneling in a double junction Coulomb blockade device under the influence of time dependent potentials. It is shown that the ac-bias leads to photon assisted cotunneling which in some cases may dominate the transport. We derive a general non-perturbative expression for the tunneling current in the presence of oscillating potentials and give a perturbative expression for the photon assisted cotunneling current.

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