Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays

Màster Oficial de Ciència i Tecnologia Quàntiques / Quantum Science and Technology, Facultat de Física, Universitat de Barcelona. Curs: 2024-2025. Tutors: Maria Moreno Cardoner, Eric Sánchez Llorente

Detalles Bibliográficos
Autor: Lancis Beneyto, Guillem
Tipo de recurso: tesis de maestría
Fecha de publicación:2025
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/223232
Acceso en línea:https://hdl.handle.net/2445/223232
Access Level:acceso abierto
Palabra clave:Entrellaçament quàntic
Sistema quàntic obert
Treballs de fi de màster
Quantum entanglement
Open quantum system
Master's thesis
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spelling Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom ArraysLancis Beneyto, GuillemEntrellaçament quànticSistema quàntic obertTreballs de fi de màsterQuantum entanglementOpen quantum systemMaster's thesisMàster Oficial de Ciència i Tecnologia Quàntiques / Quantum Science and Technology, Facultat de Física, Universitat de Barcelona. Curs: 2024-2025. Tutors: Maria Moreno Cardoner, Eric Sánchez LlorenteAchieving an efficient and controllable atom-light interface is essential for quantum technologies. In this context, subwavelegnth atomic arrays provide a promising platform, as collective radiance effects can be exploited to achieve an enhanced atom-light coupling and a higher fidelity in certain quantum optics protocols. In such systems, constructive (superradiance) and destructive (subrradiance) interference between the scattered photons enables to suppress spontaneous emission into undesired optical modes, while enhancing it into desired, detectable modes. In this work, we explore how these ideas, originally developed for two-level atoms, can be extended to multilevel structures with a focus on Λ-type atoms with one excited state and two degenerate ground states. To this end, we generalize the open quantum spin model to multilevel atoms and apply it to Λ systems. We study the collective radiative properties and the entanglement of Dicke states, using a mapping onto SU(3) algebra. Furthermore, we analyse how finite-size effects and coherent interactions modify collective radiance, leading to the emergence of darker states in the two excitation manifold of Λ-systems, compared to the case of two-level atoms, for an atom number N ≥ 10. We also study the dissipative Dicke dynamics for a fully inverted initial state, showing that the evolution is restricted to the symmetric sector. In the finite-size array case in presence of coherent interactions, we identify a peak in the dynamical evolution of entanglement, coinciding with the superradiant burst and find that the system reaches a non-trivial entangled steady state.Moreno Cardoner, MariaSánchez Llorente, Eric2025info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2445/223232Màster Oficial - Ciència i Tecnologia Quàntiques / Quantum Science and Technologyreponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaIngléscc-by-nc-nd (c) Lancis, 2025http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2232322026-05-27T06:46:51Z
dc.title.none.fl_str_mv Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
title Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
spellingShingle Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
Lancis Beneyto, Guillem
Entrellaçament quàntic
Sistema quàntic obert
Treballs de fi de màster
Quantum entanglement
Open quantum system
Master's thesis
title_short Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
title_full Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
title_fullStr Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
title_full_unstemmed Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
title_sort Entanglement Properties and Dynamics of Collectively Dissipating Multilevel Atom Arrays
dc.creator.none.fl_str_mv Lancis Beneyto, Guillem
author Lancis Beneyto, Guillem
author_facet Lancis Beneyto, Guillem
author_role author
dc.contributor.none.fl_str_mv Moreno Cardoner, Maria
Sánchez Llorente, Eric
dc.subject.none.fl_str_mv Entrellaçament quàntic
Sistema quàntic obert
Treballs de fi de màster
Quantum entanglement
Open quantum system
Master's thesis
topic Entrellaçament quàntic
Sistema quàntic obert
Treballs de fi de màster
Quantum entanglement
Open quantum system
Master's thesis
description Màster Oficial de Ciència i Tecnologia Quàntiques / Quantum Science and Technology, Facultat de Física, Universitat de Barcelona. Curs: 2024-2025. Tutors: Maria Moreno Cardoner, Eric Sánchez Llorente
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/223232
url https://hdl.handle.net/2445/223232
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Lancis, 2025
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Lancis, 2025
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Màster Oficial - Ciència i Tecnologia Quàntiques / Quantum Science and Technology
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406451530727424
score 15,81155

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