Entanglement and coherence in a spin-s XXZ system under non-uniform fields
- Autores
- Ríos, E.; Rossignoli, Raúl Dante; Canosa, Norma Beatriz
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We investigate entanglement and coherence in an XXZ spin s pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic and antiferromagnetic cases. It is shown that a non-uniform field can control the energy levels and the entanglement of the corresponding eigenstates, making it possible to entangle the system for any value of the exchange couplings, both at zero and finite temperatures. Moreover, the limit temperature for entanglement is shown to depend only on the difference between |h1 - h2| the fields applied at each spin, leading T > 0 for to a separability stripe in the (h1, h2) field plane such that the system becomes entangled above a threshold value of |h1 - h2|. These results are demonstrated to be rigorously valid for any spin s. On the other hand, the relative entropy of coherence in the standard basis, which coincides with the ground state entanglement entropy at T = 0 for any s, becomes non-zero for any value of the fields at T > 0, decreasing uniformly for sufficiently high T. A special critical point arising at T = 0 for non-uniform fields in the ferromagnetic case is also discussed.
Fil: Ríos, E.. Universidad Tecnológica Nacional. Facultad Regional Avellaneda; Argentina
Fil: Rossignoli, Raúl Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Canosa, Norma Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina - Materia
-
NON-UNIFORM FIELDS
QUANTUM COHERENCE
QUANTUM ENTANGLEMENT
SPIN SYSTEMS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/54409
Ver los metadatos del registro completo
id |
CONICETDig_a6be0a6ffed8e9bad00b528b604a8220 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/54409 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Entanglement and coherence in a spin-s XXZ system under non-uniform fieldsRíos, E.Rossignoli, Raúl DanteCanosa, Norma BeatrizNON-UNIFORM FIELDSQUANTUM COHERENCEQUANTUM ENTANGLEMENTSPIN SYSTEMShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We investigate entanglement and coherence in an XXZ spin s pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic and antiferromagnetic cases. It is shown that a non-uniform field can control the energy levels and the entanglement of the corresponding eigenstates, making it possible to entangle the system for any value of the exchange couplings, both at zero and finite temperatures. Moreover, the limit temperature for entanglement is shown to depend only on the difference between |h1 - h2| the fields applied at each spin, leading T > 0 for to a separability stripe in the (h1, h2) field plane such that the system becomes entangled above a threshold value of |h1 - h2|. These results are demonstrated to be rigorously valid for any spin s. On the other hand, the relative entropy of coherence in the standard basis, which coincides with the ground state entanglement entropy at T = 0 for any s, becomes non-zero for any value of the fields at T > 0, decreasing uniformly for sufficiently high T. A special critical point arising at T = 0 for non-uniform fields in the ferromagnetic case is also discussed.Fil: Ríos, E.. Universidad Tecnológica Nacional. Facultad Regional Avellaneda; ArgentinaFil: Rossignoli, Raúl Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Canosa, Norma Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaIOP Publishing2017-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54409Ríos, E.; Rossignoli, Raúl Dante; Canosa, Norma Beatriz; Entanglement and coherence in a spin-s XXZ system under non-uniform fields; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 50; 9; 4-2017; 1-120953-4075CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6455/aa66c3info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6455/aa66c3/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:23Zoai:ri.conicet.gov.ar:11336/54409instacron: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:34982025-09-29 09:51:23.67CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
title |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
spellingShingle |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields Ríos, E. NON-UNIFORM FIELDS QUANTUM COHERENCE QUANTUM ENTANGLEMENT SPIN SYSTEMS |
title_short |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
title_full |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
title_fullStr |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
title_full_unstemmed |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
title_sort |
Entanglement and coherence in a spin-s XXZ system under non-uniform fields |
dc.creator.none.fl_str_mv |
Ríos, E. Rossignoli, Raúl Dante Canosa, Norma Beatriz |
author |
Ríos, E. |
author_facet |
Ríos, E. Rossignoli, Raúl Dante Canosa, Norma Beatriz |
author_role |
author |
author2 |
Rossignoli, Raúl Dante Canosa, Norma Beatriz |
author2_role |
author author |
dc.subject.none.fl_str_mv |
NON-UNIFORM FIELDS QUANTUM COHERENCE QUANTUM ENTANGLEMENT SPIN SYSTEMS |
topic |
NON-UNIFORM FIELDS QUANTUM COHERENCE QUANTUM ENTANGLEMENT SPIN SYSTEMS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We investigate entanglement and coherence in an XXZ spin s pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic and antiferromagnetic cases. It is shown that a non-uniform field can control the energy levels and the entanglement of the corresponding eigenstates, making it possible to entangle the system for any value of the exchange couplings, both at zero and finite temperatures. Moreover, the limit temperature for entanglement is shown to depend only on the difference between |h1 - h2| the fields applied at each spin, leading T > 0 for to a separability stripe in the (h1, h2) field plane such that the system becomes entangled above a threshold value of |h1 - h2|. These results are demonstrated to be rigorously valid for any spin s. On the other hand, the relative entropy of coherence in the standard basis, which coincides with the ground state entanglement entropy at T = 0 for any s, becomes non-zero for any value of the fields at T > 0, decreasing uniformly for sufficiently high T. A special critical point arising at T = 0 for non-uniform fields in the ferromagnetic case is also discussed. Fil: Ríos, E.. Universidad Tecnológica Nacional. Facultad Regional Avellaneda; Argentina Fil: Rossignoli, Raúl Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina Fil: Canosa, Norma Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina |
description |
We investigate entanglement and coherence in an XXZ spin s pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams are analyzed in detail in both the ferromagnetic and antiferromagnetic cases. It is shown that a non-uniform field can control the energy levels and the entanglement of the corresponding eigenstates, making it possible to entangle the system for any value of the exchange couplings, both at zero and finite temperatures. Moreover, the limit temperature for entanglement is shown to depend only on the difference between |h1 - h2| the fields applied at each spin, leading T > 0 for to a separability stripe in the (h1, h2) field plane such that the system becomes entangled above a threshold value of |h1 - h2|. These results are demonstrated to be rigorously valid for any spin s. On the other hand, the relative entropy of coherence in the standard basis, which coincides with the ground state entanglement entropy at T = 0 for any s, becomes non-zero for any value of the fields at T > 0, decreasing uniformly for sufficiently high T. A special critical point arising at T = 0 for non-uniform fields in the ferromagnetic case is also discussed. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-04 |
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/11336/54409 Ríos, E.; Rossignoli, Raúl Dante; Canosa, Norma Beatriz; Entanglement and coherence in a spin-s XXZ system under non-uniform fields; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 50; 9; 4-2017; 1-12 0953-4075 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/54409 |
identifier_str_mv |
Ríos, E.; Rossignoli, Raúl Dante; Canosa, Norma Beatriz; Entanglement and coherence in a spin-s XXZ system under non-uniform fields; IOP Publishing; Journal of Physics B: Atomic, Molecular and Optical Physics; 50; 9; 4-2017; 1-12 0953-4075 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6455/aa66c3 info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6455/aa66c3/meta |
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 |
dc.publisher.none.fl_str_mv |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
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_ |
1844613580387778560 |
score |
13.070432 |