# Conjugated-polymer memristor

Four probabilistic bits (p-bits, stochastic units that take 0 or 1 with a sigmoidal probability of their input) built from solution-processed conjugated-polymer memristors run a closed-loop Gibbs sampler with online drift tracking; on competing, degenerate and cooperative posteriors, both the sampled distribution and its autocorrelation fall inside the finite-sample range of ideal p-bits, with no parameter fitted to the target. Reprogrammed in software, the same circuit also reproduces the invertible AND gate, with temperature fixed in advance rather than fitted.

Four probabilistic bits (p-bits, stochastic units that take 0 or 1 with a sigmoidal probability of their input) built from solution-processed conjugated-polymer memristors run a closed-loop Gibbs sampler with online drift tracking; on competing, degenerate and cooperative posteriors, both the sampled distribution and its autocorrelation fall inside the finite-sample range of ideal p-bits, with no parameter fitted to the target. Reprogrammed in software, the same circuit also reproduces the invertible AND gate, with temperature fixed in advance rather than fitted.