Tunnel-effect superconductive detector cell

A detector cell comprising tunnel-effect superconductive devices organized in a two-dimensional array and deposited on a common substrate, each superconductive device comprising a tunnel-effect superconductive junction electrically connected to a bottom connection area and to a top connection area, wherein the superconductive devices are separated from one another by a trench region extending down to and including the bottom connection area so as to provide physical separation between adjacent semiconductor devices and so as to define individual bottom connection areas disposed between respective junctions and the substrate, and wherein at least one individual bottom connection area is electrically connected to at least one bottom connection area of an adjacent superconductive device by a localized bridge region.