2026-04-17T14:08:34Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/1923932025-11-19T20:55:59Zcom_2072_1057col_2072_478917col_2072_478933
RECERCAT
author
Garcia, Lluc
author
Bofill i Villà, Josep M.
author
Moreira, Ibério de Pinho Ribeiro
author
Albareda, Guillermo
2023-01-20T09:46:58Z2023-01-20T09:46:58Z2022-10-262023-01-20T09:46:58Z
Time-efficient control schemes for manipulating quantum systems are of great importance in quantum technologies, where environmental forces rapidly degrade the quality of pure states over time. In this Letter, we formulate an approach to time-optimal control that circumvents the boundary-value problem that plagues the quantum brachistochrone equation at the expense of relaxing the form of the control Hamiltonian. In this setting, a coupled system of equations, one for the control Hamiltonian and another one for the duration of the protocol, realizes an ansatz-free approach to quantum control theory. We show how driven systems, in the form of a Landau-Zener type Hamiltonian, can be efficiently maneuvered to speed up a given state transformation in a highly adiabatic manner and with a low energy cost.
(c) American Physical Society, 2022 info:eu-repo/semantics/openAccess
Teoria quàntica
Física
Quantum theory
Physics
Highly Adiabatic Time-Optimal Quantum Driving at Low Energy Cost
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion