Open quantum system description of singlet-triplet qubits in quantum dots
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevB.94.235433 http://hdl.handle.net/11449/169307 |
Resumo: | We develop a theoretical model to describe the dissipative dynamics of singlet-triplet qubits in GaAs quantum dots. Using the concurrence experimentally obtained [Shulman, Science 336, 202 (2012)]SCIEAS0036-807510.1126/science.1217692 as a guide, we assume that each logical qubit fluctuates under the action of a random telegraph noise (RTN) that simulates the 1/fα noise. We also study the dynamics of concurrence as a function of the amplitude of the RTN, the correlation time of the RTN, the preparation time of states, and the two-qubit coupling. Furthermore, we show that the two-qubit coupling together with the preparation time strongly affect the entanglement dissipative dynamics and both physical quantities can be employed to enhance the entanglement between singlet-triplet qubits. |
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Repositório Institucional da UNESP |
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Open quantum system description of singlet-triplet qubits in quantum dotsWe develop a theoretical model to describe the dissipative dynamics of singlet-triplet qubits in GaAs quantum dots. Using the concurrence experimentally obtained [Shulman, Science 336, 202 (2012)]SCIEAS0036-807510.1126/science.1217692 as a guide, we assume that each logical qubit fluctuates under the action of a random telegraph noise (RTN) that simulates the 1/fα noise. We also study the dynamics of concurrence as a function of the amplitude of the RTN, the correlation time of the RTN, the preparation time of states, and the two-qubit coupling. Furthermore, we show that the two-qubit coupling together with the preparation time strongly affect the entanglement dissipative dynamics and both physical quantities can be employed to enhance the entanglement between singlet-triplet qubits.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Física Universidade Federal de São CarlosFaculdade de Ciências UNESP Universidade Estadual PaulistaAbdus Salam International Centre for Theoretical Physics, Strada Costiera 11Physics Department College of Science Al Imam Mohammad Ibn Saud Islamic University (IMISU)Faculdade de Ciências UNESP Universidade Estadual PaulistaFAPESP: 12/13052-6FAPESP: 15/05581-7Universidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (Unesp)Abdus Salam International Centre for Theoretical PhysicsAl Imam Mohammad Ibn Saud Islamic University (IMISU)Castelano, L. K.Fanchini, F. F. [UNESP]Berrada, K.2018-12-11T16:45:18Z2018-12-11T16:45:18Z2016-12-23info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1103/PhysRevB.94.235433Physical Review B, n. 23, 2016.2469-99692469-9950http://hdl.handle.net/11449/16930710.1103/PhysRevB.94.2354332-s2.0-850075800452-s2.0-85007580045.pdf88848904721934740000-0003-3297-905XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review Binfo:eu-repo/semantics/openAccess2023-10-22T06:08:02Zoai:repositorio.unesp.br:11449/169307Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:37:30.739920Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Open quantum system description of singlet-triplet qubits in quantum dots |
title |
Open quantum system description of singlet-triplet qubits in quantum dots |
spellingShingle |
Open quantum system description of singlet-triplet qubits in quantum dots Castelano, L. K. |
title_short |
Open quantum system description of singlet-triplet qubits in quantum dots |
title_full |
Open quantum system description of singlet-triplet qubits in quantum dots |
title_fullStr |
Open quantum system description of singlet-triplet qubits in quantum dots |
title_full_unstemmed |
Open quantum system description of singlet-triplet qubits in quantum dots |
title_sort |
Open quantum system description of singlet-triplet qubits in quantum dots |
author |
Castelano, L. K. |
author_facet |
Castelano, L. K. Fanchini, F. F. [UNESP] Berrada, K. |
author_role |
author |
author2 |
Fanchini, F. F. [UNESP] Berrada, K. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (Unesp) Abdus Salam International Centre for Theoretical Physics Al Imam Mohammad Ibn Saud Islamic University (IMISU) |
dc.contributor.author.fl_str_mv |
Castelano, L. K. Fanchini, F. F. [UNESP] Berrada, K. |
description |
We develop a theoretical model to describe the dissipative dynamics of singlet-triplet qubits in GaAs quantum dots. Using the concurrence experimentally obtained [Shulman, Science 336, 202 (2012)]SCIEAS0036-807510.1126/science.1217692 as a guide, we assume that each logical qubit fluctuates under the action of a random telegraph noise (RTN) that simulates the 1/fα noise. We also study the dynamics of concurrence as a function of the amplitude of the RTN, the correlation time of the RTN, the preparation time of states, and the two-qubit coupling. Furthermore, we show that the two-qubit coupling together with the preparation time strongly affect the entanglement dissipative dynamics and both physical quantities can be employed to enhance the entanglement between singlet-triplet qubits. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-23 2018-12-11T16:45:18Z 2018-12-11T16:45:18Z |
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://dx.doi.org/10.1103/PhysRevB.94.235433 Physical Review B, n. 23, 2016. 2469-9969 2469-9950 http://hdl.handle.net/11449/169307 10.1103/PhysRevB.94.235433 2-s2.0-85007580045 2-s2.0-85007580045.pdf 8884890472193474 0000-0003-3297-905X |
url |
http://dx.doi.org/10.1103/PhysRevB.94.235433 http://hdl.handle.net/11449/169307 |
identifier_str_mv |
Physical Review B, n. 23, 2016. 2469-9969 2469-9950 10.1103/PhysRevB.94.235433 2-s2.0-85007580045 2-s2.0-85007580045.pdf 8884890472193474 0000-0003-3297-905X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review B |
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.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128541020127232 |