Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling

Spin flips are one of the limiting factors for spin-based information processing. We demonstrate a transport approach for determining the spin-flip rates of a self-assembled InAs double quantum dot occupied by a single electron. In such devices, different Landé factors lead to an inhomogeneous Zeema...

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Autores: Dani, O., Hussein, R., Bayer, J.C., Pierz, K., Kohler, Sigmund, Haug, R.J.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/393427
Acceso en línea:http://hdl.handle.net/10261/393427
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187955375&doi=10.1103%2fPhysRevB.109.L121404&partnerID=40&md5=4a15ea54682b70c94346556a174d95e0
Access Level:acceso abierto
Palabra clave:Coulomb blockade
Electrical conductivity
Quantum transport
Spin blockade
Double quantum dots
Quantum master equation
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spelling Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunnelingDani, O.Hussein, R.Bayer, J.C.Pierz, K.Kohler, SigmundHaug, R.J.Coulomb blockadeElectrical conductivityQuantum transportSpin blockadeDouble quantum dotsQuantum master equationSpin flips are one of the limiting factors for spin-based information processing. We demonstrate a transport approach for determining the spin-flip rates of a self-assembled InAs double quantum dot occupied by a single electron. In such devices, different Landé factors lead to an inhomogeneous Zeeman splitting, so that the two spin channels can never be at resonance simultaneously, leading to a spin blockade at low temperatures. This blockade is analyzed in terms of spin flips for different temperatures and magnetic fields. Our results are in good agreement with a quantum master equation that combines the dot-lead couplings with ohmic dissipation stemming from spin-flip cotunneling. © 2024 American Physical Society.This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy - EXC 2123 QuantumFrontiers - 390837967, the State of Lower Saxony of Germany via the Hannover School for Nanotechnology, and by the Spanish Ministry of Science, Innovation, and Universities (Grant No. PID2020-117787GB-I00) , and by the CSIC Research Platform on Quantum Technologies PTI-001.Peer reviewedAmerican Physical SocietyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/393427https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187955375&doi=10.1103%2fPhysRevB.109.L121404&partnerID=40&md5=4a15ea54682b70c94346556a174d95e0reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésPhysical Review Bhttps://doi.org/10.1103/PhysRevB.109.L121404Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3934272026-05-22T06:33:51Z
dc.title.none.fl_str_mv Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
title Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
spellingShingle Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
Dani, O.
Coulomb blockade
Electrical conductivity
Quantum transport
Spin blockade
Double quantum dots
Quantum master equation
title_short Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
title_full Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
title_fullStr Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
title_full_unstemmed Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
title_sort Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling
dc.creator.none.fl_str_mv Dani, O.
Hussein, R.
Bayer, J.C.
Pierz, K.
Kohler, Sigmund
Haug, R.J.
author Dani, O.
author_facet Dani, O.
Hussein, R.
Bayer, J.C.
Pierz, K.
Kohler, Sigmund
Haug, R.J.
author_role author
author2 Hussein, R.
Bayer, J.C.
Pierz, K.
Kohler, Sigmund
Haug, R.J.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Coulomb blockade
Electrical conductivity
Quantum transport
Spin blockade
Double quantum dots
Quantum master equation
topic Coulomb blockade
Electrical conductivity
Quantum transport
Spin blockade
Double quantum dots
Quantum master equation
description Spin flips are one of the limiting factors for spin-based information processing. We demonstrate a transport approach for determining the spin-flip rates of a self-assembled InAs double quantum dot occupied by a single electron. In such devices, different Landé factors lead to an inhomogeneous Zeeman splitting, so that the two spin channels can never be at resonance simultaneously, leading to a spin blockade at low temperatures. This blockade is analyzed in terms of spin flips for different temperatures and magnetic fields. Our results are in good agreement with a quantum master equation that combines the dot-lead couplings with ohmic dissipation stemming from spin-flip cotunneling. © 2024 American Physical Society.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/393427
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187955375&doi=10.1103%2fPhysRevB.109.L121404&partnerID=40&md5=4a15ea54682b70c94346556a174d95e0
url http://hdl.handle.net/10261/393427
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187955375&doi=10.1103%2fPhysRevB.109.L121404&partnerID=40&md5=4a15ea54682b70c94346556a174d95e0
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review B
https://doi.org/10.1103/PhysRevB.109.L121404
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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