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Full Counting Statistics of Charge Transfer in Mesoscopic Conductors

Nanoscience seminar by Mihajlo Vanevic, University of Basel.

Abstract
We present the circuit theory of quantum transport which is a discrete
counterpart of the Keldysh-Green's function technique adapted to decomposition of the system  into nodes and connectors. By introducing a modification of the boundary conditions  at the terminals, the theory can be generalized to access not only the average  current but the complete statistics of charge transfer in a multiterminal setup.
The approach is illustrated by calculation of the charge transfer statistics in a dc biased  superconductor/cavity/normal-metal junction and in a mesoscopic point
contact in the presence of time-dependent voltage drive. The complete knowledge of the charge transfer statistics enables us to identify the elementary charge transfer processes in the system.