Extending the time of coherent optical response in ensemble of singly-charged InGaAs quantum dots

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dc.contributor.authorKosarev, Alexander
dc.contributor.authorTrifonov, Artur V.
dc.contributor.authorYugova, Irina A.
dc.contributor.authorYanibekov, Iskander I.
dc.contributor.authorPoltavtsev, Sergey
dc.contributor.authorKamenskii, Aleksandr
dc.contributor.authorScholz, Sven
dc.contributor.authorSgroi, Carlo Alberto
dc.contributor.authorLudwig, Arne
dc.contributor.authorWieck, Andreas
dc.contributor.authorYakovlev, Dmitri
dc.contributor.authorBayer, Manfred
dc.contributor.authorAkimov, Ilya
dc.date.accessioned2022-12-13T14:43:20Z
dc.date.available2022-12-13T14:43:20Z
dc.date.issued2022-06-10
dc.description.abstractThe ability to extend the time scale of the coherent optical response from large ensembles of quantum emitters is highly appealing for applications in quantum information devices. In semiconductor nanostructures, spin degrees of freedom can be used as auxiliary, powerful tools to modify the coherent optical dynamics. Here, we apply this approach to negatively charged (In,Ga)As/GaAs self-assembled quantum dots which are considered as excellent quantum emitters with robust optical coherence and high bandwidth. We study three-pulse spin-dependent photon echoes subject to moderate transverse magnetic fields up to 1 T. We demonstrate that the timescale of coherent optical response can be extended by at least an order of magnitude by the field. Without magnetic field, the photon echo decays with T2 = 0.45 ns which is determined by the radiative lifetime of trions T1 = 0.26 ns. In the presence of the transverse magnetic field, the decay of the photon echo signal is given by spin dephasing time of the ensemble of resident electrons T2,eā€‰āˆ¼ā€‰4 ns. We demonstrate that the non-zero transverse g-factor of the heavy holes in the trion state plays a crucial role in the temporal evolution and magnetic field dependence of the long-lived photon echo signal.en
dc.identifier.urihttp://hdl.handle.net/2003/41158
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-23005
dc.language.isoende
dc.relation.ispartofseriesCommunications physics;Bd 5, 2022, H. 1, Artikel-ID 144
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectMagneto-opticsen
dc.subjectNonlinear opticsen
dc.subjectQuantum dotsen
dc.subjectSpintronicsen
dc.subjectUltrafast photonicsen
dc.subject.ddc530
dc.subject.rswkNichtlineare Optikde
dc.subject.rswkQuantenpunktde
dc.subject.rswkSpintronikde
dc.titleExtending the time of coherent optical response in ensemble of singly-charged InGaAs quantum dotsen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationCommunications physics. Bd 5, 2022, H. 1, Artikel-ID 144en
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1038/s42005-022-00922-2de

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