Anatoly Yu. Smirnov

TL;DR: In this article, a large-scale quantum simulation of the Kosterlitz-Thouless (KT) phase transition in the 2D Ising model is presented, where the authors use a quantum processor as a programmable magnetic lattice and demonstrate the emergence of a complex order parameter with continuous rotational symmetry.

TL;DR: In this paper, the authors report on experimental observations of equilibration in quantum annealing simulations, measured on up to 1440 qubits with microsecond resolution, and demonstrate that PIMC does not simulate QA dynamics even for sign-problem-free Hamiltonians, and that nearterm quantum devices can be used to accelerate computational tasks of practical relevance.

TL;DR: In this article, two superconducting flux qubits are coupled via two canonically conjugate degrees of freedom (charge and flux) to achieve a nonstoquastic Hamiltonian.

TL;DR: In this paper, a theoretical model based on a NIBA Quantum Master Equation was developed to describe the multiqubit dissipative tunneling effects under the complex noise characteristics of such quantum devices.

TL;DR: The observed scaling advantage in the quantum simulation over the classical approach of path-integral Monte Carlo fixed-Hamiltonian relaxation with multiqubit cluster updates demonstrates that near-term quantum devices can be used to accelerate computational tasks of practical relevance.