Fig. 1: Illustration of the three-step conversion process.
From: Stochastic logic in biased coupled photonic probabilistic bits
a We take the truth table from a (basic) digital logic gate and map it to a network of p-bits (b)). b Network of p-bits switching between two states randomly with some given probability. c A network of p-bits describing the gate is equivalent to an Ising model (where each spin can be either in the spin-up or spin-down state, see the black arrows) with a coupling term (J) and a local magnetic field (\(\overrightarrow{h}\)). d We then find the ground state of the Ising model by looking at the steady state of a network of (i.e. coupled) optical parametric oscillators (OPOs) that are biased by an injected field. The biasing operation results in a slanted potential (see the sketch inside the circles) experienced by the OPO.
