  We report our studies of the shot noise spectrum in tunneling through an
interacting quantum dot when an additional single-level quantum dot without
tunnel coupling to leads is coherently side-connected to it. We show that the
zero-frequency shot noise could reach a super-Poissonian value for appropriate
ratios between dot-dot hoppings and dot-lead couplings, but the current is
independent on the hopping. Moreover, the frequency spectrum of shot noise
shows an obvious peak at the Rabi frequency, which is controllable by tuning
the dot-lead couplings.
