Qubit transient dynamics at tunneling Fermi-edge singularity
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/44355 |
Resumo: | We consider tunneling of spinless electrons from a single-channel emitter into an empty collector through an interacting resonant level of the quantum dot. When all Coulomb screening of sudden charge variations of the dot during the tunneling is realized by the emitter channel, the system is described with an exactly solvable model of a dissipative qubit. We derive the corresponding Bloch equation for its quantum evolution. We further use it to specify the qubit transient dynamics towards its stationary quantum state after a sudden change of the level position. We demonstrate that the time-dependent tunneling current characterizing this dynamics exhibits an oscillating behavior for a wide range of the model parameters. |
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Qubit transient dynamics at tunneling Fermi-edge singularityQubitEntanglementTunnelingCiências Naturais::Ciências FísicasScience & TechnologyWe consider tunneling of spinless electrons from a single-channel emitter into an empty collector through an interacting resonant level of the quantum dot. When all Coulomb screening of sudden charge variations of the dot during the tunneling is realized by the emitter channel, the system is described with an exactly solvable model of a dissipative qubit. We derive the corresponding Bloch equation for its quantum evolution. We further use it to specify the qubit transient dynamics towards its stationary quantum state after a sudden change of the level position. We demonstrate that the time-dependent tunneling current characterizing this dynamics exhibits an oscillating behavior for a wide range of the model parameters.The work was supported by the Foundation for Science and Technology of Portugal and by the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement No. PCOFUND-GA-2009- 246542 and Research Fellowship SFRH/BI/52154/2013.IOP PublishingUniversidade do MinhoPonomarenko, V. V.Larkin, Ivan2016-04-182016-04-18T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/44355engPonomarenko, V. V., & Larkin, I. A. (2016). Qubit transient dynamics at tunneling Fermi-edge singularity. Epl, 113(6). doi: 10.1209/0295-5075/113/670040295-507510.1209/0295-5075/113/67004info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:41:28Zoai:repositorium.sdum.uminho.pt:1822/44355Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:38:27.384112Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Qubit transient dynamics at tunneling Fermi-edge singularity |
title |
Qubit transient dynamics at tunneling Fermi-edge singularity |
spellingShingle |
Qubit transient dynamics at tunneling Fermi-edge singularity Ponomarenko, V. V. Qubit Entanglement Tunneling Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Qubit transient dynamics at tunneling Fermi-edge singularity |
title_full |
Qubit transient dynamics at tunneling Fermi-edge singularity |
title_fullStr |
Qubit transient dynamics at tunneling Fermi-edge singularity |
title_full_unstemmed |
Qubit transient dynamics at tunneling Fermi-edge singularity |
title_sort |
Qubit transient dynamics at tunneling Fermi-edge singularity |
author |
Ponomarenko, V. V. |
author_facet |
Ponomarenko, V. V. Larkin, Ivan |
author_role |
author |
author2 |
Larkin, Ivan |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Ponomarenko, V. V. Larkin, Ivan |
dc.subject.por.fl_str_mv |
Qubit Entanglement Tunneling Ciências Naturais::Ciências Físicas Science & Technology |
topic |
Qubit Entanglement Tunneling Ciências Naturais::Ciências Físicas Science & Technology |
description |
We consider tunneling of spinless electrons from a single-channel emitter into an empty collector through an interacting resonant level of the quantum dot. When all Coulomb screening of sudden charge variations of the dot during the tunneling is realized by the emitter channel, the system is described with an exactly solvable model of a dissipative qubit. We derive the corresponding Bloch equation for its quantum evolution. We further use it to specify the qubit transient dynamics towards its stationary quantum state after a sudden change of the level position. We demonstrate that the time-dependent tunneling current characterizing this dynamics exhibits an oscillating behavior for a wide range of the model parameters. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-18 2016-04-18T00:00:00Z |
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.uri.fl_str_mv |
http://hdl.handle.net/1822/44355 |
url |
http://hdl.handle.net/1822/44355 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ponomarenko, V. V., & Larkin, I. A. (2016). Qubit transient dynamics at tunneling Fermi-edge singularity. Epl, 113(6). doi: 10.1209/0295-5075/113/67004 0295-5075 10.1209/0295-5075/113/67004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799132921772113920 |