Agradecimentos: A.S. acknowledges support from the National Council for Scientific and Technological Development (CNPq, Brazil) under Grant No. 140549/2018-8. P.N. and M.V.S.B. acknowledge financial support from CNPq under Grant No. 141018/2017-8 and FAPESP (Fundação de Amparo à Pesquisa do Estado...

Agradecimentos: A.S. acknowledges support from the National Council for Scientific and Technological Development (CNPq, Brazil) under Grant No. 140549/2018-8. P.N. and M.V.S.B. acknowledge financial support from CNPq under Grant No. 141018/2017-8 and FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo, Brazil; Grants No. 2018/06365-4, No. 2018/21285-7, and No. 2020/02170-4). B.G. acknowledges support from the National Science Center (NCN), Poland, under Projects No. 2020/38/E/ST3/00269 and the PL-Grid infrastructure. S.D. acknowledges support from the U.S. National Science Foundation under Grant No. DMR-2010127

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...

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

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ

141018/2017-8; 140549/2018-8

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

2018/06365-4; 2018/21285-7; 2020/02170-4

Fechado