A zero-temperature quantum Monte Carlo algorithm and quantum spin glasses

Abstract

This technique helps determine key properties of the quantum Hamiltonian's ground state and tunes quantum fluctuations to help users find optimized solutions to computationally hard problems. Most existing quantum annealing Monte Carlo schemes are based on finite temperature methods. The zero-temperature quantum MC method not only helps achieve the classical ground state, but also helps simulate the low-kinetic energy ground states of the quantum Hamiltonian more efficiently than traditional approaches.