Impurity effects in two-electron coupled quantum dots : entanglement modulation

Autores
Acosta Coden, Diego Sebastián; Romero, Rodolfo Horacio; Ferron, Alejandro; Gomez, Sergio Santiago
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a detailed analysis of the electronic and optical properties of two-electron quantum dots with a two-dimensional Gaussian confinement potential. We study the effects of Coulomb impurities and the possibility of manipulating the entanglement of the electrons by controlling the confinement potential parameters. The degree of entanglement becomes highly modulated by both the location and charge screening of the impurity atom, resulting in two regimes: one of low entanglement and the other of high entanglement, with both of them mainly determined by the magnitude of the charge. It is shown that the magnitude of the oscillator strength of the system could provide an indication of the presence and characteristics of impurities and, therefore, the degree of entanglement.
Fil: Acosta Coden, Diego Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado E Innovación Tecnológica; Argentina
Fil: Romero, Rodolfo Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; Argentina
Fil: Ferron, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; Argentina
Fil: Gomez, Sergio Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; Argentina
Materia
Quantum Dots
Entanglement
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/2401
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Impurity effects in two-electron coupled quantum dots : entanglement modulationAcosta Coden, Diego SebastiánRomero, Rodolfo HoracioFerron, AlejandroGomez, Sergio SantiagoQuantum DotsEntanglementhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a detailed analysis of the electronic and optical properties of two-electron quantum dots with a two-dimensional Gaussian confinement potential. We study the effects of Coulomb impurities and the possibility of manipulating the entanglement of the electrons by controlling the confinement potential parameters. The degree of entanglement becomes highly modulated by both the location and charge screening of the impurity atom, resulting in two regimes: one of low entanglement and the other of high entanglement, with both of them mainly determined by the magnitude of the charge. It is shown that the magnitude of the oscillator strength of the system could provide an indication of the presence and characteristics of impurities and, therefore, the degree of entanglement.Fil: Acosta Coden, Diego Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado E Innovación Tecnológica; ArgentinaFil: Romero, Rodolfo Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; ArgentinaFil: Ferron, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; ArgentinaFil: Gomez, Sergio Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; ArgentinaIOP Publishing2013-03-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2401Acosta Coden, Diego Sebastián; Romero, Rodolfo Horacio; Ferron, Alejandro; Gomez, Sergio Santiago; Impurity effects in two-electron coupled quantum dots : entanglement modulation; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 46; 7-3-2013; 65501-655090953-4075enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/46/6/065501info:eu-repo/semantics/altIdentifier/url/stacks.iop.org/JPhysB/46/065501info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:51:06Zoai:ri.conicet.gov.ar:11336/2401instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:51:07.123CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Impurity effects in two-electron coupled quantum dots : entanglement modulation
title Impurity effects in two-electron coupled quantum dots : entanglement modulation
spellingShingle Impurity effects in two-electron coupled quantum dots : entanglement modulation
Acosta Coden, Diego Sebastián
Quantum Dots
Entanglement
title_short Impurity effects in two-electron coupled quantum dots : entanglement modulation
title_full Impurity effects in two-electron coupled quantum dots : entanglement modulation
title_fullStr Impurity effects in two-electron coupled quantum dots : entanglement modulation
title_full_unstemmed Impurity effects in two-electron coupled quantum dots : entanglement modulation
title_sort Impurity effects in two-electron coupled quantum dots : entanglement modulation
dc.creator.none.fl_str_mv Acosta Coden, Diego Sebastián
Romero, Rodolfo Horacio
Ferron, Alejandro
Gomez, Sergio Santiago
author Acosta Coden, Diego Sebastián
author_facet Acosta Coden, Diego Sebastián
Romero, Rodolfo Horacio
Ferron, Alejandro
Gomez, Sergio Santiago
author_role author
author2 Romero, Rodolfo Horacio
Ferron, Alejandro
Gomez, Sergio Santiago
author2_role author
author
author
dc.subject.none.fl_str_mv Quantum Dots
Entanglement
topic Quantum Dots
Entanglement
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a detailed analysis of the electronic and optical properties of two-electron quantum dots with a two-dimensional Gaussian confinement potential. We study the effects of Coulomb impurities and the possibility of manipulating the entanglement of the electrons by controlling the confinement potential parameters. The degree of entanglement becomes highly modulated by both the location and charge screening of the impurity atom, resulting in two regimes: one of low entanglement and the other of high entanglement, with both of them mainly determined by the magnitude of the charge. It is shown that the magnitude of the oscillator strength of the system could provide an indication of the presence and characteristics of impurities and, therefore, the degree of entanglement.
Fil: Acosta Coden, Diego Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado E Innovación Tecnológica; Argentina
Fil: Romero, Rodolfo Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; Argentina
Fil: Ferron, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; Argentina
Fil: Gomez, Sergio Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Modelado e Innovación Tecnológica; Argentina
description We present a detailed analysis of the electronic and optical properties of two-electron quantum dots with a two-dimensional Gaussian confinement potential. We study the effects of Coulomb impurities and the possibility of manipulating the entanglement of the electrons by controlling the confinement potential parameters. The degree of entanglement becomes highly modulated by both the location and charge screening of the impurity atom, resulting in two regimes: one of low entanglement and the other of high entanglement, with both of them mainly determined by the magnitude of the charge. It is shown that the magnitude of the oscillator strength of the system could provide an indication of the presence and characteristics of impurities and, therefore, the degree of entanglement.
publishDate 2013
dc.date.none.fl_str_mv 2013-03-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/2401
Acosta Coden, Diego Sebastián; Romero, Rodolfo Horacio; Ferron, Alejandro; Gomez, Sergio Santiago; Impurity effects in two-electron coupled quantum dots : entanglement modulation; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 46; 7-3-2013; 65501-65509
0953-4075
url http://hdl.handle.net/11336/2401
identifier_str_mv Acosta Coden, Diego Sebastián; Romero, Rodolfo Horacio; Ferron, Alejandro; Gomez, Sergio Santiago; Impurity effects in two-electron coupled quantum dots : entanglement modulation; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 46; 7-3-2013; 65501-65509
0953-4075
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/46/6/065501
info:eu-repo/semantics/altIdentifier/url/stacks.iop.org/JPhysB/46/065501
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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