Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts

Detalhes bibliográficos
Autor(a) principal: Souza, André Maurício Conceição de
Data de Publicação: 2010
Outros Autores: Almeida, Francisco A. G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFS
Texto Completo: http://link.aps.org/doi/10.1103/PhysRevB.82.115422
https://ri.ufs.br/handle/riufs/461
Resumo: We investigate the statistics of orbital entanglement production between electrons in a chaotic quantum dot with two-channel leads. Through a random-matrix simulation, we obtain the probability density of two en- tanglement measures, concurrence and entanglement formation, by varying the transparency of the contacts in the presence and absence of time-reversal invariance of the electron dynamics inside the cavity. The results suggest that orbital entanglement production is optimized by increasing the asymmetry between the transparency of the contacts, especially when time-reversal invariance is broken.
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spelling Souza, André Maurício Conceição deAlmeida, Francisco A. G.2013-03-18T21:52:04Z2013-03-18T21:52:04Z2010-09-13SOUZA, A. M. C.; ALMEIDA, F. Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts. Physical Review B, New York, v. 82, n. 11, set. 2010. Disponível em: <http://prb.aps.org/pdf/PRB/v82/i11/e115422>. Acesso em: 18 mar. 2013.1550-235Xhttp://link.aps.org/doi/10.1103/PhysRevB.82.115422https://ri.ufs.br/handle/riufs/461© American Physical SocietyWe investigate the statistics of orbital entanglement production between electrons in a chaotic quantum dot with two-channel leads. Through a random-matrix simulation, we obtain the probability density of two en- tanglement measures, concurrence and entanglement formation, by varying the transparency of the contacts in the presence and absence of time-reversal invariance of the electron dynamics inside the cavity. The results suggest that orbital entanglement production is optimized by increasing the asymmetry between the transparency of the contacts, especially when time-reversal invariance is broken.American Physical SocietySistemas mesoscópicosPontos quânticosSistemas caóticosStatistics of orbital entanglement production in a chaotic quantum dot with nonideal contactsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFSinstname:Universidade Federal de Sergipe (UFS)instacron:UFSinfo:eu-repo/semantics/openAccessTHUMBNAILStatisticsOrbitalEntanglement.pdf.jpgStatisticsOrbitalEntanglement.pdf.jpgGenerated Thumbnailimage/jpeg1711https://ri.ufs.br/jspui/bitstream/riufs/461/4/StatisticsOrbitalEntanglement.pdf.jpg6c712f74433cc0c4a62f70767b6b745fMD54ORIGINALStatisticsOrbitalEntanglement.pdfStatisticsOrbitalEntanglement.pdfapplication/pdf668428https://ri.ufs.br/jspui/bitstream/riufs/461/1/StatisticsOrbitalEntanglement.pdf485238ff0f0a760000bff44fb99605c9MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://ri.ufs.br/jspui/bitstream/riufs/461/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52TEXTStatisticsOrbitalEntanglement.pdf.txtStatisticsOrbitalEntanglement.pdf.txtExtracted texttext/plain24122https://ri.ufs.br/jspui/bitstream/riufs/461/3/StatisticsOrbitalEntanglement.pdf.txt251f86ed1c04cfc58611b481d670eef1MD53riufs/4612013-04-18 18:29:05.648oai:ufs.br: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Repositório InstitucionalPUBhttps://ri.ufs.br/oai/requestrepositorio@academico.ufs.bropendoar:2013-04-18T21:29:05Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS)false
dc.title.pt_BR.fl_str_mv Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
title Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
spellingShingle Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
Souza, André Maurício Conceição de
Sistemas mesoscópicos
Pontos quânticos
Sistemas caóticos
title_short Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
title_full Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
title_fullStr Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
title_full_unstemmed Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
title_sort Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
author Souza, André Maurício Conceição de
author_facet Souza, André Maurício Conceição de
Almeida, Francisco A. G.
author_role author
author2 Almeida, Francisco A. G.
author2_role author
dc.contributor.author.fl_str_mv Souza, André Maurício Conceição de
Almeida, Francisco A. G.
dc.subject.por.fl_str_mv Sistemas mesoscópicos
Pontos quânticos
Sistemas caóticos
topic Sistemas mesoscópicos
Pontos quânticos
Sistemas caóticos
description We investigate the statistics of orbital entanglement production between electrons in a chaotic quantum dot with two-channel leads. Through a random-matrix simulation, we obtain the probability density of two en- tanglement measures, concurrence and entanglement formation, by varying the transparency of the contacts in the presence and absence of time-reversal invariance of the electron dynamics inside the cavity. The results suggest that orbital entanglement production is optimized by increasing the asymmetry between the transparency of the contacts, especially when time-reversal invariance is broken.
publishDate 2010
dc.date.issued.fl_str_mv 2010-09-13
dc.date.accessioned.fl_str_mv 2013-03-18T21:52:04Z
dc.date.available.fl_str_mv 2013-03-18T21:52:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv SOUZA, A. M. C.; ALMEIDA, F. Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts. Physical Review B, New York, v. 82, n. 11, set. 2010. Disponível em: <http://prb.aps.org/pdf/PRB/v82/i11/e115422>. Acesso em: 18 mar. 2013.
dc.identifier.uri.fl_str_mv http://link.aps.org/doi/10.1103/PhysRevB.82.115422
https://ri.ufs.br/handle/riufs/461
dc.identifier.issn.none.fl_str_mv 1550-235X
dc.identifier.license.pt_BR.fl_str_mv © American Physical Society
identifier_str_mv SOUZA, A. M. C.; ALMEIDA, F. Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts. Physical Review B, New York, v. 82, n. 11, set. 2010. Disponível em: <http://prb.aps.org/pdf/PRB/v82/i11/e115422>. Acesso em: 18 mar. 2013.
1550-235X
© American Physical Society
url http://link.aps.org/doi/10.1103/PhysRevB.82.115422
https://ri.ufs.br/handle/riufs/461
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFS
instname:Universidade Federal de Sergipe (UFS)
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instname_str Universidade Federal de Sergipe (UFS)
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institution UFS
reponame_str Repositório Institucional da UFS
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