Fig. 3: Inter column fidelity restoration.
a Xbar fidelity restoration mechanism illustration for 0 dBm input power. The arrows, in the middle of the graph, represent the attenuation factors enforced at each column towards balancing the differential path loss among the Xbar columns. b Experimentally obtained fidelity in the execution of #10,000 arbitrary linear transformation matrices when the Xbar is programmed with the baseline model (gray) and the HA model and restoration procedure (red).
