Fig. 10
From: Coherent Ising machines—optical neural networks operating at the quantum limit

 CIM operating at the quantum and classical limits. a The trajectory of \(2\left\langle {\Delta \hat X^2} \right\rangle\) and \(2\left\langle {\Delta \hat P^2} \right\rangle\) of the high-Q and low-Q cavity CIM consisting of two anti-ferromagnetically coupled spins.40 b The success probability of finding a solution for an N = 16 one-dimensional Ising spin model for various values of the temperature parameter \(n_{{\rm th}} = k_{\rm B}T{\mathrm{/}}\hbar \omega _{}^{}\)17