ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,755,174, issued on Oct. 6, was assigned to INTERNATIONAL BUSINESS MACHINES Corp. (Armonk, N.Y.).

"Quantum-classical markov chain monte carlo" was invented by David Layden (San Jose, Calif.), Pawel Wocjan (Oviedo, Fla.) and Ryan Victor Mishmash (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and a method of sampling from a probability distribution approximating a Boltzmann distribution of an n-spin Ising model includes receiving, by a classical computer, coupling coefficients for spin-spin interactions, field coefficients local to each spin, and a temperature for the n-spin Ising model; selecting a first n-spin configuration; prepar...