Quantum Control by Few-Cycles Pulses: The Two-Level Problem

We investigate the problem of population transfer in a two-states system driven by an external electromagnetic field featuring a few cycles, until the extreme limit of two or one cycle. Taking the physical constraint of zero-area total field into account, we determine strategies leading to ultrahigh...

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Autores principales: Peyraut, François, Holweck, Frédéric, Guérin, Stéphane
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9955166/
https://www.ncbi.nlm.nih.gov/pubmed/36832579
http://dx.doi.org/10.3390/e25020212
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author Peyraut, François
Holweck, Frédéric
Guérin, Stéphane
author_facet Peyraut, François
Holweck, Frédéric
Guérin, Stéphane
author_sort Peyraut, François
collection PubMed
description We investigate the problem of population transfer in a two-states system driven by an external electromagnetic field featuring a few cycles, until the extreme limit of two or one cycle. Taking the physical constraint of zero-area total field into account, we determine strategies leading to ultrahigh-fidelity population transfer despite the failure of the rotating wave approximation. We specifically implement adiabatic passage based on adiabatic Floquet theory for a number of cycles as low as 2.5 cycles, finding and making the dynamics follow an adiabatic trajectory connecting the initial and targeted states. Nonadiabatic strategies with shaped or chirped pulses, extending the [Formula: see text]-pulse regime to two- or single-cycle pulses, are also derived.
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spelling pubmed-99551662023-02-25 Quantum Control by Few-Cycles Pulses: The Two-Level Problem Peyraut, François Holweck, Frédéric Guérin, Stéphane Entropy (Basel) Article We investigate the problem of population transfer in a two-states system driven by an external electromagnetic field featuring a few cycles, until the extreme limit of two or one cycle. Taking the physical constraint of zero-area total field into account, we determine strategies leading to ultrahigh-fidelity population transfer despite the failure of the rotating wave approximation. We specifically implement adiabatic passage based on adiabatic Floquet theory for a number of cycles as low as 2.5 cycles, finding and making the dynamics follow an adiabatic trajectory connecting the initial and targeted states. Nonadiabatic strategies with shaped or chirped pulses, extending the [Formula: see text]-pulse regime to two- or single-cycle pulses, are also derived. MDPI 2023-01-22 /pmc/articles/PMC9955166/ /pubmed/36832579 http://dx.doi.org/10.3390/e25020212 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Peyraut, François
Holweck, Frédéric
Guérin, Stéphane
Quantum Control by Few-Cycles Pulses: The Two-Level Problem
title Quantum Control by Few-Cycles Pulses: The Two-Level Problem
title_full Quantum Control by Few-Cycles Pulses: The Two-Level Problem
title_fullStr Quantum Control by Few-Cycles Pulses: The Two-Level Problem
title_full_unstemmed Quantum Control by Few-Cycles Pulses: The Two-Level Problem
title_short Quantum Control by Few-Cycles Pulses: The Two-Level Problem
title_sort quantum control by few-cycles pulses: the two-level problem
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9955166/
https://www.ncbi.nlm.nih.gov/pubmed/36832579
http://dx.doi.org/10.3390/e25020212
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