High- fi delity non-adiabatic cutting and stitching of a spin chain via local control

We propose and analyze, focusing on non-adiabatic effects, a technique of manipulating quantum spin systems based on local 'cutting' and 'stitching' of the Heisenberg exchange coupling between the spins. This first operation is cutting of a bond separating a single spin from a li...

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Detalles Bibliográficos
Autores: Pyshkin, P. V., Sherman, Evgeny, You, J. Q., Wu, Lianao
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/30755
Acceso en línea:http://hdl.handle.net/10810/30755
Access Level:acceso abierto
Palabra clave:quantum control
adiabatic
shortcuts
spin chain
quantum computation
adiabaticity
dots
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spelling High- fi delity non-adiabatic cutting and stitching of a spin chain via local controlPyshkin, P. V.Sherman, EvgenyYou, J. Q.Wu, Lianaoquantum controladiabaticshortcutsspin chainquantum computationadiabaticitydotsWe propose and analyze, focusing on non-adiabatic effects, a technique of manipulating quantum spin systems based on local 'cutting' and 'stitching' of the Heisenberg exchange coupling between the spins. This first operation is cutting of a bond separating a single spin from a linear chain, or of two neighboring bonds for a ring-shaped array of spins. We show that the disconnected spin can be in the ground state with a high-fidelity even after a non-adiabatic process. Next, we consider inverse operation of stitching these bonds to increase the system size. We show that the optimal control algorithm can be found by using common numerical procedures with a simple two-parametric control function able to produce a high-fidelity cutting and stitching. These results can be applied for manipulating ensembles of quantum dots, considered as prospective elements for quantum information technologies, and for design of machines based on quantum thermodynamics.This work was supported by the National Research, Development and Innovation Office of Hungary (Project Nos. K124351 and 2017-1.2.1-NKP-2017-00001), Basque Government (Grant No. IT472-10), the Spanish Ministry of Economy, Industry, and Competitiveness (MINECO) and the European Regional Development Fund FEDER Grant No. FIS2015-67161-P (MINECO/FEDER, UE), and the NSFC No. 11774022. EditorialIOP Publishing201920192018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/30755reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/FIS2015-67161-P/http://iopscience.iop.org/article/10.1088/1367-2630/aae4ac/metainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.Atribución 3.0 Españaoai:addi.ehu.eus:10810/307552026-06-18T09:23:17Z
dc.title.none.fl_str_mv High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
title High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
spellingShingle High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
Pyshkin, P. V.
quantum control
adiabatic
shortcuts
spin chain
quantum computation
adiabaticity
dots
title_short High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
title_full High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
title_fullStr High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
title_full_unstemmed High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
title_sort High- fi delity non-adiabatic cutting and stitching of a spin chain via local control
dc.creator.none.fl_str_mv Pyshkin, P. V.
Sherman, Evgeny
You, J. Q.
Wu, Lianao
author Pyshkin, P. V.
author_facet Pyshkin, P. V.
Sherman, Evgeny
You, J. Q.
Wu, Lianao
author_role author
author2 Sherman, Evgeny
You, J. Q.
Wu, Lianao
author2_role author
author
author
dc.subject.none.fl_str_mv quantum control
adiabatic
shortcuts
spin chain
quantum computation
adiabaticity
dots
topic quantum control
adiabatic
shortcuts
spin chain
quantum computation
adiabaticity
dots
description We propose and analyze, focusing on non-adiabatic effects, a technique of manipulating quantum spin systems based on local 'cutting' and 'stitching' of the Heisenberg exchange coupling between the spins. This first operation is cutting of a bond separating a single spin from a linear chain, or of two neighboring bonds for a ring-shaped array of spins. We show that the disconnected spin can be in the ground state with a high-fidelity even after a non-adiabatic process. Next, we consider inverse operation of stitching these bonds to increase the system size. We show that the optimal control algorithm can be found by using common numerical procedures with a simple two-parametric control function able to produce a high-fidelity cutting and stitching. These results can be applied for manipulating ensembles of quantum dots, considered as prospective elements for quantum information technologies, and for design of machines based on quantum thermodynamics.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/30755
url http://hdl.handle.net/10810/30755
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/FIS2015-67161-P/
http://iopscience.iop.org/article/10.1088/1367-2630/aae4ac/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
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:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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