Quantum state transfer in disordered spin chains: How much engineering is reasonable?

Autores
Zwick, Analía Elizabeth; Alvarez, Gonzalo Agustin; Stolze, Joachim; Osenda, Omar
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The transmission of quantum states through spin chains is an important element in the implementation of quantum information technologies. Speed and fidelity of transfer are the main objectives which have to be achieved by the devices even in the presence of imperfections which are unavoidable in any manufacturing process. To reach these goals, several kinds of spin chains have been suggested, which differ in the degree of fine-tuning, or engineering, of the system parameters. In this work we present a systematic study of two important classes of such chains. In one class only the spin couplings at the ends of the chain have to be adjusted to a value different from the bulk coupling constant, while in the other class every coupling has to have a specific value. We demonstrate that configurations from the two different classes may perform similarly when subjected to the same kind of disorder in spite of the large difference in the engineering effort necessary to prepare the system. We identify the system features responsible for these similarities and we perform a detailed study of the transfer fidelity as a function of chain length and disorder strength, yielding empirical scaling laws for the fidelity which are similar for all kinds of chain and all disorder models. These results are helpful in identifying the optimal spin chain for a given quantum information transfer task. In particular, they help in judging whether it is worthwhile to engineer all couplings in the chain as compared to adjusting only the boundary couplings.
Fil: Zwick, Analía Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Universität Dortmund; Alemania
Fil: Alvarez, Gonzalo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universität Dortmund; Alemania
Fil: Stolze, Joachim. Universität Dortmund; Alemania
Fil: Osenda, Omar. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
QUANTUM CHANNELS
MESOCOPIC ECHOES
SPIN DYNAMICS
PERFECT STATE TRANSFER
QUANTUM INFORMATION
DECOHERENCE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/52243
Acceder
id CONICETDig_7cd281eab3a42748c82cf8d30339c62d
oai_identifier_str oai:ri.conicet.gov.ar:11336/52243
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Quantum state transfer in disordered spin chains: How much engineering is reasonable?Zwick, Analía ElizabethAlvarez, Gonzalo AgustinStolze, JoachimOsenda, OmarQUANTUM CHANNELSMESOCOPIC ECHOESSPIN DYNAMICSPERFECT STATE TRANSFERQUANTUM INFORMATIONDECOHERENCEhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The transmission of quantum states through spin chains is an important element in the implementation of quantum information technologies. Speed and fidelity of transfer are the main objectives which have to be achieved by the devices even in the presence of imperfections which are unavoidable in any manufacturing process. To reach these goals, several kinds of spin chains have been suggested, which differ in the degree of fine-tuning, or engineering, of the system parameters. In this work we present a systematic study of two important classes of such chains. In one class only the spin couplings at the ends of the chain have to be adjusted to a value different from the bulk coupling constant, while in the other class every coupling has to have a specific value. We demonstrate that configurations from the two different classes may perform similarly when subjected to the same kind of disorder in spite of the large difference in the engineering effort necessary to prepare the system. We identify the system features responsible for these similarities and we perform a detailed study of the transfer fidelity as a function of chain length and disorder strength, yielding empirical scaling laws for the fidelity which are similar for all kinds of chain and all disorder models. These results are helpful in identifying the optimal spin chain for a given quantum information transfer task. In particular, they help in judging whether it is worthwhile to engineer all couplings in the chain as compared to adjusting only the boundary couplings.Fil: Zwick, Analía Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Universität Dortmund; AlemaniaFil: Alvarez, Gonzalo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universität Dortmund; AlemaniaFil: Stolze, Joachim. Universität Dortmund; AlemaniaFil: Osenda, Omar. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaRinton Press, Inc2015-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/52243Zwick, Analía Elizabeth; Alvarez, Gonzalo Agustin; Stolze, Joachim; Osenda, Omar; Quantum state transfer in disordered spin chains: How much engineering is reasonable?; Rinton Press, Inc; Quantum Information & Computation; 15; 7; 1-5-2015; 582-6001533-7146CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.rintonpress.com/journals/qiconline.html#v15n78info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1306.1695info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:00:19Zoai:ri.conicet.gov.ar:11336/52243instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:00:19.755CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Quantum state transfer in disordered spin chains: How much engineering is reasonable?
title Quantum state transfer in disordered spin chains: How much engineering is reasonable?
spellingShingle Quantum state transfer in disordered spin chains: How much engineering is reasonable?
Zwick, Analía Elizabeth
QUANTUM CHANNELS
MESOCOPIC ECHOES
SPIN DYNAMICS
PERFECT STATE TRANSFER
QUANTUM INFORMATION
DECOHERENCE
title_short Quantum state transfer in disordered spin chains: How much engineering is reasonable?
title_full Quantum state transfer in disordered spin chains: How much engineering is reasonable?
title_fullStr Quantum state transfer in disordered spin chains: How much engineering is reasonable?
title_full_unstemmed Quantum state transfer in disordered spin chains: How much engineering is reasonable?
title_sort Quantum state transfer in disordered spin chains: How much engineering is reasonable?
dc.creator.none.fl_str_mv Zwick, Analía Elizabeth
Alvarez, Gonzalo Agustin
Stolze, Joachim
Osenda, Omar
author Zwick, Analía Elizabeth
author_facet Zwick, Analía Elizabeth
Alvarez, Gonzalo Agustin
Stolze, Joachim
Osenda, Omar
author_role author
author2 Alvarez, Gonzalo Agustin
Stolze, Joachim
Osenda, Omar
author2_role author
author
author
dc.subject.none.fl_str_mv QUANTUM CHANNELS
MESOCOPIC ECHOES
SPIN DYNAMICS
PERFECT STATE TRANSFER
QUANTUM INFORMATION
DECOHERENCE
topic QUANTUM CHANNELS
MESOCOPIC ECHOES
SPIN DYNAMICS
PERFECT STATE TRANSFER
QUANTUM INFORMATION
DECOHERENCE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The transmission of quantum states through spin chains is an important element in the implementation of quantum information technologies. Speed and fidelity of transfer are the main objectives which have to be achieved by the devices even in the presence of imperfections which are unavoidable in any manufacturing process. To reach these goals, several kinds of spin chains have been suggested, which differ in the degree of fine-tuning, or engineering, of the system parameters. In this work we present a systematic study of two important classes of such chains. In one class only the spin couplings at the ends of the chain have to be adjusted to a value different from the bulk coupling constant, while in the other class every coupling has to have a specific value. We demonstrate that configurations from the two different classes may perform similarly when subjected to the same kind of disorder in spite of the large difference in the engineering effort necessary to prepare the system. We identify the system features responsible for these similarities and we perform a detailed study of the transfer fidelity as a function of chain length and disorder strength, yielding empirical scaling laws for the fidelity which are similar for all kinds of chain and all disorder models. These results are helpful in identifying the optimal spin chain for a given quantum information transfer task. In particular, they help in judging whether it is worthwhile to engineer all couplings in the chain as compared to adjusting only the boundary couplings.
Fil: Zwick, Analía Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Universität Dortmund; Alemania
Fil: Alvarez, Gonzalo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universität Dortmund; Alemania
Fil: Stolze, Joachim. Universität Dortmund; Alemania
Fil: Osenda, Omar. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The transmission of quantum states through spin chains is an important element in the implementation of quantum information technologies. Speed and fidelity of transfer are the main objectives which have to be achieved by the devices even in the presence of imperfections which are unavoidable in any manufacturing process. To reach these goals, several kinds of spin chains have been suggested, which differ in the degree of fine-tuning, or engineering, of the system parameters. In this work we present a systematic study of two important classes of such chains. In one class only the spin couplings at the ends of the chain have to be adjusted to a value different from the bulk coupling constant, while in the other class every coupling has to have a specific value. We demonstrate that configurations from the two different classes may perform similarly when subjected to the same kind of disorder in spite of the large difference in the engineering effort necessary to prepare the system. We identify the system features responsible for these similarities and we perform a detailed study of the transfer fidelity as a function of chain length and disorder strength, yielding empirical scaling laws for the fidelity which are similar for all kinds of chain and all disorder models. These results are helpful in identifying the optimal spin chain for a given quantum information transfer task. In particular, they help in judging whether it is worthwhile to engineer all couplings in the chain as compared to adjusting only the boundary couplings.
publishDate 2015
dc.date.none.fl_str_mv 2015-05-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/52243
Zwick, Analía Elizabeth; Alvarez, Gonzalo Agustin; Stolze, Joachim; Osenda, Omar; Quantum state transfer in disordered spin chains: How much engineering is reasonable?; Rinton Press, Inc; Quantum Information & Computation; 15; 7; 1-5-2015; 582-600
1533-7146
CONICET Digital
CONICET
url http://hdl.handle.net/11336/52243
identifier_str_mv Zwick, Analía Elizabeth; Alvarez, Gonzalo Agustin; Stolze, Joachim; Osenda, Omar; Quantum state transfer in disordered spin chains: How much engineering is reasonable?; Rinton Press, Inc; Quantum Information & Computation; 15; 7; 1-5-2015; 582-600
1533-7146
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.rintonpress.com/journals/qiconline.html#v15n78
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1306.1695
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Rinton Press, Inc
publisher.none.fl_str_mv Rinton Press, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842979873309589504
score 12.48226

Publicaciones similares