Three phases of quantum annealing: Fast, slow, and... - BV FAPESP
Advanced search
Start date
Betweenand


Three phases of quantum annealing: Fast, slow, and very slow

Full text
Author(s):
Soriani, Artur ; Naze, Pierre ; Bonanca, Marcus V. S. ; Gardas, Bartlomiej ; Deffner, Sebastian
Total Authors: 5
Document type: Journal article
Source: PHYSICAL REVIEW A; v. 105, n. 4, p. 12-pg., 2022-04-14.
Abstract

Currently, existing quantum annealers have proven themselves as viable technology for the first practical applications in the noisy-intermediate-scale-quantum era. However, to fully exploit their capabilities, a comprehensive characterization of their finite-time excitations is instrumental. To this end, we develop a phase diagram for driven Ising chains, from which the scaling behavior of the excess work can be read off as a function of process duration and system size. "Fast" processes are well described by the Kibble-Zurek mechanism; "slow" process are governed by effective Landau-Zener dynamics; and "very slow" processes can be approximated with adiabatic perturbation theory. (AU)

FAPESP's process: 18/06365-4 - Optimization of thermodynamical work in far from equilibrium systems
Grantee:Pierre Marie Antoine Leite Nazé
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/21285-7 - Optimization of thermodynamic work with machine learning control
Grantee:Pierre Marie Antoine Leite Nazé
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 20/02170-4 - Optimal thermodynamic processes in out-of-equilibrium systems
Grantee:Marcus Vinicius Segantini Bonança
Support Opportunities: Regular Research Grants