Performance Comparison between Coherent Ising Machines and Quantum Annealer

摘要

NTT has been developing a coherent Ising machine (CIM), which efficiently finds solutions to ground-state-search problems of the Ising model using a network of optical parametric oscillators. We introduce our recent experiment that compared the computational performance of CIMs (the one developed by NTT and another developed by Stanford University) with a quantum annealer, which solves the Ising-model problems using superconducting devices.