Statistics of orbital entanglement production in a chaotic quantum dot with nonideal contacts
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | |
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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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) instacron:UFS |
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Universidade Federal de Sergipe (UFS) |
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UFS |
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Repositório Institucional da UFS |
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Repositório Institucional da UFS |
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