Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses

We explore the possibility of entangling an excitonic two-level system in a semiconductor quantum dot with a cavity defined on a photonic crystal by sweeping the cavity frequency across its resonance with the exciton transition. The dynamic cavity detuning is established by a radio frequency surface...

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Autores: Blattmann, Ralf, Krenner, Hubert J., Kohler, Sigmund, Hänggi, Peter
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/94260
Acceso en línea:http://hdl.handle.net/10261/94260
Access Level:acceso abierto
Palabra clave:ddc:530
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spelling Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulsesBlattmann, RalfKrenner, Hubert J.Kohler, SigmundHänggi, Peterddc:530We explore the possibility of entangling an excitonic two-level system in a semiconductor quantum dot with a cavity defined on a photonic crystal by sweeping the cavity frequency across its resonance with the exciton transition. The dynamic cavity detuning is established by a radio frequency surface acoustic wave (SAW). It induces Landau-Zener transitions between the excitonic and the photonic degrees of freedom and thereby creates a superposition state. We optimize this scheme by using tailored Fourier-synthesized SAW pulses with up to five harmonics. The theoretical study is performed with a master equation approach for present state-of-the-art setups. Assuming experimentally demonstrated system parameters, we show that the composed pulses increase both the maximum entanglement and its persistence. The latter is only limited by the dominant dephasing mechanism, i.e., the photon loss from the cavity. © 2014 American Physical Society.We gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) via Sonderforschungsbereich SFB 631 (Projects No. A5 and No. B5) and the Emmy Noether Program (HJK, KR3790/2-1). This work was supported by the Spanish Ministry of Economy and Competitiveness via Grant No. MAT2011-24331.Peer ReviewedAmerican Physical SocietyMinisterio de Economía y Competitividad (España)2014201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/94260reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevA.89.012327info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/942602026-05-22T06:33:51Z
dc.title.none.fl_str_mv Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
title Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
spellingShingle Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
Blattmann, Ralf
ddc:530
title_short Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
title_full Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
title_fullStr Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
title_full_unstemmed Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
title_sort Entanglement creation in a quantum-dot-nanocavity system by Fourier-synthesized acoustic pulses
dc.creator.none.fl_str_mv Blattmann, Ralf
Krenner, Hubert J.
Kohler, Sigmund
Hänggi, Peter
author Blattmann, Ralf
author_facet Blattmann, Ralf
Krenner, Hubert J.
Kohler, Sigmund
Hänggi, Peter
author_role author
author2 Krenner, Hubert J.
Kohler, Sigmund
Hänggi, Peter
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
dc.subject.none.fl_str_mv ddc:530
topic ddc:530
description We explore the possibility of entangling an excitonic two-level system in a semiconductor quantum dot with a cavity defined on a photonic crystal by sweeping the cavity frequency across its resonance with the exciton transition. The dynamic cavity detuning is established by a radio frequency surface acoustic wave (SAW). It induces Landau-Zener transitions between the excitonic and the photonic degrees of freedom and thereby creates a superposition state. We optimize this scheme by using tailored Fourier-synthesized SAW pulses with up to five harmonics. The theoretical study is performed with a master equation approach for present state-of-the-art setups. Assuming experimentally demonstrated system parameters, we show that the composed pulses increase both the maximum entanglement and its persistence. The latter is only limited by the dominant dephasing mechanism, i.e., the photon loss from the cavity. © 2014 American Physical Society.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
2014
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/10261/94260
url http://hdl.handle.net/10261/94260
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevA.89.012327
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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score 15,811543

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