Shuvro's Quantum Monte Carlo paper out in Communications Physics

In this paper, Shuvro demonstrates significant acceleration of a standard Quantum Monte Carlo (QMC) algorithm using a specially designed digital processor and a clockless analog processor. He reports 2-3 orders of magnitude acceleration for each processor type, providing a roadmap for 5-6 orders of magnitude acceleration for a transverse field Ising model (TFIM) and possibly other QMC models. The clockless analog hardware can be considered as the classical counterpart of the quantum annealer and has a performance within a factor of <10 of the latter. Furthermore, the convergence time for the clockless analog hardware scales with the number of qubits as ~N, improving the ~N² scaling for CPU implementations but appears worse than that reported for quantum annealers by D-Wave.

Image credit: DALL.E 2 with the prompt "quantum simulation being accelerated by a digital and clockless analog processor"