  The noise properties of pump currents through an open double quantum dot
setup with non-adiabatic ac driving are investigated. Driving frequencies close
to the internal resonances of the double dot-system mark the optimal working
points at which the pump current assumes a maximum while its noise power
possesses a remarkably low minimum. A rotating-wave approximation provides
analytical expressions for the current and its noise power and allows to
optimize the noise characteristics. The analytical results are compared to
numerical results from a Floquet transport theory.
