Fig. 9
From: Coherent Ising machines—optical neural networks operating at the quantum limit
Performance of measurement-feedback coupling CIM. a Results with the measurement-feedback CIM for various-size Möbius-Ladder graphs. (upper) Observed probability of obtaining a ground state of the Möbius-Ladder graph in a single run, as a function of the size N of the graph. Multiple 100-run batches were performed for each graph size to obtain the standard deviations, which are shown as error bars. (Lower) Histograms of obtained solutions in 100 runs for the graphs shown in the insets.24 b Time evolutions of Ising energy obtained with CIM (blue curve) and SA (black curve) when solving the complete graph K2000. The dotted line corresponds to the target Ising energy of −60,278 obtained with GW-SDP.25 (c) Cut values obtained for the MAX-CUT problem on 2000-node graphs with the CIM, SA, and GW-SDP
