Fig. 4: Comparing digital to clockless p-computer.
From: Accelerated quantum Monte Carlo with probabilistic computers
a A 6 × 6 antiferromagnetically (AFM) coupled triangular lattice with classical spins is shown. b The convergences of the order parameter for the lattice shown in a are plotted for two different p-computer design approaches (red solid line: graph-colored based digital design and blue solid line: nanomagnets based analog design) discussed in this work. We have used β = 2 in this example. For SPICE simulation, we averaged results over 500 different runs whereas for the graph-colored result, we averaged over 1000 different runs. c The graph-colored (GC) based digital p-computer design where the convergence is estimated from MATLAB simulations assuming c × fc (c = 3 for triangular lattice) sweeps are collected every per second, fc being the clock frequency. d The clockless p-computer design which is simulated using SPICE simulator.
