Abstract: A detection system includes a superconducting detector having a plurality of nanowire sensors configured to operate simultaneously. The nanowire sensors are adapted to transmit respective signals upon detection of one or more photons. A controller is adapted to receive the respective signals transmitted by the plurality of nanowire sensors. The controller is adapted to designate an initial signal as indicating a real event, the initial signal being above a predefined amplitude. The controller is adapted to implement a crosstalk rejection sequence, including accepting the respective signals received within a threshold time after the real event during an acceptance window, via a gating unit, and rejecting the respective signals after the threshold time for a specified rejection window, via the gating unit. The crosstalk rejection sequence is repeated for subsequent designations of real events to achieve a desired rate of event rejection.