  We consider dark sector scenarios where dark matter is accompanied by a dark
photon and multiple-flavor dark fermions charged under the dark gauge group. We
study quantum interference effects in dark sector jets, where multiple dark
photons are emitted from high-energy dark fermions. We perform fully quantum
simulations of dark sector showers and compare the results against those of the
classical Monte-Carlo simulations. We find important differences in probability
distributions of dark photon countings between quantum and classical
computations. When the number of dark-fermion flavors is large, we find
significant enhancements in large numbers of dark photon emissions. Such
enhancements can provide distinguishing signals for our scenarios at particle
colliders.
