Abstract: A current injection logic device with Josephson diode network comprises three parallel branches, each having three Josephson diodes in series, the first and last diodes of each of the branches being respectively connected to a first and a second main electrodes, said second main electrode being connected to earth. Apart from said network, the device comprises two inputs respectively connected to two intermediate electrodes between two of the end diodes and the two associated adjacent diodes, and an output connected to the first main electrode. In the case of diodes with a leakage resistance well above their normal resistance, it is possible to define input currents, whereof the major part passes into said end diodes. The device has application to the formation of AND or OR gates.

Abstract: Current injection logic device with a system of Josephson diodes.This system is constituted by N parallel branches, each having a first and a second Josephson diode in series, so as to provide a connection. All the first and second diodes are respectively connected to first and second main electrodes, the second electrode being earthed. The device also has M current inputs, respectively connected to M of the connections and an output connected to the first main electrode and which is to be raised to a logic level determined as a function of the values of currents injected by the inputs. In each branch provided with a current input, one or other of the diodes is shunted by a resistor, as a function of the envisaged application.