Biexciton initialization by two-photon excitation in site-controlled quantum dots: the complexity of the antibinding state case

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dc.contributor.authorJuska, Gediminas
dc.contributor.authorJahromi, Iman Ranjbar
dc.contributor.authorMattana, Francesco
dc.contributor.authorVaro, Simone
dc.contributor.authorDimastrodonato, Valeria
dc.contributor.authorPelucchi, Emanuele
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2021-12-03T12:41:34Z
dc.date.available2021-12-03T12:41:34Z
dc.date.issued2020-09-29
dc.description.abstractIn this work, we present a biexciton state population in (111)B oriented site-controlled InGaAs quantum dots (QDs) by resonant two photon excitation. We show that the excited state recombines emitting highly pure single photon pairs entangled in polarization. The discussed cases herein are compelling due to the specific energetic structure of pyramidal InGaAs QDs—an antibinding biexciton—a state with a positive binding energy. We demonstrate that resonant two-photon excitation of QDs with antibinding biexcitons can lead to a complex excitation-recombination scenario. We systematically observed that the resonant biexciton state population is competing with an acoustic-phonon assisted population of an exciton state. These findings show that under typical two-photon resonant excitation conditions, deterministic biexciton state initialization can be compromised. This complication should be taken into account by the community members aiming to utilize similar epitaxial QDs with an antibinding biexciton.en
dc.description.sponsorshipScience Foundation Ireland (Grant Nos. 15/IA/2864,12/RC/2276-P2 and SFI-18/SIRG/5526 )en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid134001en
dc.identifier.citationJuska, G., Jahromi, I. R., Mattana, F., Varo, S., Dimastrodonato, V. and Pelucchi, E. (2020) 'Biexciton initialization by two-photon excitation in site-controlled quantum dots: the complexity of the antibinding state case', Applied Physics Letters, 117, 134001 (6pp). doi: 10.1063/5.0011383en
dc.identifier.doi10.1063/5.0011383en
dc.identifier.eissn1077-3118
dc.identifier.endpage6en
dc.identifier.issn0003-6951
dc.identifier.journaltitleApplied Physics Lettersen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/12308
dc.identifier.volume117en
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/en
dc.rights© 2020, AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Applied Physics Letters 117:134001 and may be found at https://https://aip.scitation.org/doi/pdf/10.1063/5.0011383en
dc.subjectQuantum informationen
dc.subjectExcitonsen
dc.subjectPhononsen
dc.subjectPhotoemissionen
dc.subjectQuantum dotsen
dc.subjectPhotonic entanglementen
dc.subjectQuantum mechanical principlesen
dc.subjectQuantum mechanical systems and processesen
dc.subjectPolarizationen
dc.subjectLasersen
dc.titleBiexciton initialization by two-photon excitation in site-controlled quantum dots: the complexity of the antibinding state caseen
dc.typeArticle (peer-reviewed)en
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