Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevA.91.042325 http://hdl.handle.net/11449/167830 |
Resumo: | We study the occurrence of errors in a continuously decoupled two-qubit state during a SWAP quantum operation under decoherence. We consider a realization of this quantum gate based on the Heisenberg exchange interaction, which alone suffices for achieving universal quantum computation. Furthermore, we introduce a continuous-dynamical-decoupling scheme that commutes with the Heisenberg Hamiltonian to protect it from the amplitude damping and dephasing errors caused by the system-environment interaction. We consider two error-protection settings. One protects the qubits from both amplitude damping and dephasing errors. The other features the amplitude damping as a residual error and protects the qubits from dephasing errors only. In both settings, we investigate the interaction of qubits with common and independent environments separately. We study how errors affect the entanglement and fidelity for different environmental spectral densities. |
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Repositório Institucional da UNESP |
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Protecting the SWAP operation from general and residual errors by continuous dynamical decouplingWe study the occurrence of errors in a continuously decoupled two-qubit state during a SWAP quantum operation under decoherence. We consider a realization of this quantum gate based on the Heisenberg exchange interaction, which alone suffices for achieving universal quantum computation. Furthermore, we introduce a continuous-dynamical-decoupling scheme that commutes with the Heisenberg Hamiltonian to protect it from the amplitude damping and dephasing errors caused by the system-environment interaction. We consider two error-protection settings. One protects the qubits from both amplitude damping and dephasing errors. The other features the amplitude damping as a residual error and protects the qubits from dephasing errors only. In both settings, we investigate the interaction of qubits with common and independent environments separately. We study how errors affect the entanglement and fidelity for different environmental spectral densities.Faculdade de Ciências, UNESP - Universidade Estadual PaulistaInstituto de Física de São Carlos, Universidade de São Paulo, P.O. Box 369Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, P.O. Box 6165Faculdade de Ciências, UNESP - Universidade Estadual PaulistaUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade Estadual de Campinas (UNICAMP)Fanchini, F. F. [UNESP]Napolitano, R. D.J.Çakmak, B.Caldeira, A. O.2018-12-11T16:38:30Z2018-12-11T16:38:30Z2015-04-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1103/PhysRevA.91.042325Physical Review A - Atomic, Molecular, and Optical Physics, v. 91, n. 4, 2015.1094-16221050-2947http://hdl.handle.net/11449/16783010.1103/PhysRevA.91.0423252-s2.0-849294978932-s2.0-84929497893.pdf88848904721934740000-0003-3297-905XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review A - Atomic, Molecular, and Optical Physics1,2881,288info:eu-repo/semantics/openAccess2023-11-07T06:14:28Zoai:repositorio.unesp.br:11449/167830Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:06:30.774298Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
title |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
spellingShingle |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling Fanchini, F. F. [UNESP] |
title_short |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
title_full |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
title_fullStr |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
title_full_unstemmed |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
title_sort |
Protecting the SWAP operation from general and residual errors by continuous dynamical decoupling |
author |
Fanchini, F. F. [UNESP] |
author_facet |
Fanchini, F. F. [UNESP] Napolitano, R. D.J. Çakmak, B. Caldeira, A. O. |
author_role |
author |
author2 |
Napolitano, R. D.J. Çakmak, B. Caldeira, A. O. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Fanchini, F. F. [UNESP] Napolitano, R. D.J. Çakmak, B. Caldeira, A. O. |
description |
We study the occurrence of errors in a continuously decoupled two-qubit state during a SWAP quantum operation under decoherence. We consider a realization of this quantum gate based on the Heisenberg exchange interaction, which alone suffices for achieving universal quantum computation. Furthermore, we introduce a continuous-dynamical-decoupling scheme that commutes with the Heisenberg Hamiltonian to protect it from the amplitude damping and dephasing errors caused by the system-environment interaction. We consider two error-protection settings. One protects the qubits from both amplitude damping and dephasing errors. The other features the amplitude damping as a residual error and protects the qubits from dephasing errors only. In both settings, we investigate the interaction of qubits with common and independent environments separately. We study how errors affect the entanglement and fidelity for different environmental spectral densities. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-04-22 2018-12-11T16:38:30Z 2018-12-11T16:38:30Z |
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/PhysRevA.91.042325 Physical Review A - Atomic, Molecular, and Optical Physics, v. 91, n. 4, 2015. 1094-1622 1050-2947 http://hdl.handle.net/11449/167830 10.1103/PhysRevA.91.042325 2-s2.0-84929497893 2-s2.0-84929497893.pdf 8884890472193474 0000-0003-3297-905X |
url |
http://dx.doi.org/10.1103/PhysRevA.91.042325 http://hdl.handle.net/11449/167830 |
identifier_str_mv |
Physical Review A - Atomic, Molecular, and Optical Physics, v. 91, n. 4, 2015. 1094-1622 1050-2947 10.1103/PhysRevA.91.042325 2-s2.0-84929497893 2-s2.0-84929497893.pdf 8884890472193474 0000-0003-3297-905X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review A - Atomic, Molecular, and Optical Physics 1,288 1,288 |
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 |
|
_version_ |
1808128756484669440 |