Accurate photon echo timing by optical freezing of exciton dephasing and rephasing in quantum dots

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dc.contributor.authorKosarev, Alexander N.
dc.contributor.authorRose, Hendrik
dc.contributor.authorPoltavtsev, Sergey V.
dc.contributor.authorReichelt, Matthias
dc.contributor.authorSchneider, Christian
dc.contributor.authorKamp, Martin
dc.contributor.authorHöfling, Sven
dc.contributor.authorBayer, Manfred
dc.contributor.authorMeier, Torsten
dc.contributor.authorAkimov, Ilya A.
dc.date.accessioned2021-03-19T06:53:17Z
dc.date.available2021-03-19T06:53:17Z
dc.date.issued2020-12-08
dc.description.abstractSemiconductor quantum dots are excellent candidates for ultrafast coherent manipulation of qubits by laser pulses on picosecond timescales or even faster. In inhomogeneous ensembles a macroscopic optical polarization decays rapidly due to dephasing, which, however, is reversible in photon echoes carrying complete information about the coherent ensemble dynamics. Control of the echo emission time is mandatory for applications. Here, we propose a concept to reach this goal. In a two-pulse photon echo sequence, we apply an additional resonant control pulse with multiple of 2π area. Depending on its arrival time, the control slows down dephasing or rephasing of the exciton ensemble during its action. We demonstrate for self-assembled (In,Ga)As quantum dots that the photon echo emission time can be retarded or advanced by up to 5 ps relative to its nominal appearance time without control. This versatile protocol may be used to obtain significantly longer temporal shifts for suitably tailored control pulses.en
dc.identifier.urihttp://hdl.handle.net/2003/40089
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-21966
dc.language.isoende
dc.relation.ispartofseriesCommun Phys;3
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectNonlinear opticsen
dc.subjectQuantum dotsen
dc.subjectUltrafast photonicsen
dc.subject.ddc530
dc.subject.rswkNichtlineare Optikde
dc.subject.rswkQuantenpunktde
dc.subject.rswkQubitde
dc.subject.rswkPhotonikde
dc.titleAccurate photon echo timing by optical freezing of exciton dephasing and rephasing in quantum dotsen
dc.typeTextde
dc.type.publicationtypearticleen
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationKosarev, A.N., Rose, H., Poltavtsev, S.V. et al. Accurate photon echo timing by optical freezing of exciton dephasing and rephasing in quantum dots. Commun Phys 3, 228 (2020).de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1038/s42005-020-00491-2de

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