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dc.contributor.authorLevinsen, Jesper
dc.contributor.authorMarchetti, Francesca Maria
dc.contributor.authorKeeling, Jonathan
dc.contributor.authorParish, Meera M.
dc.identifier.citationLevinsen , J , Marchetti , F M , Keeling , J & Parish , M M 2019 , ' Spectroscopic signatures of quantum many-body correlations in polariton microcavities ' , Physical Review Letters , vol. 123 , no. 26 , 266401 .
dc.identifier.otherPURE: 262911113
dc.identifier.otherPURE UUID: e694c131-8328-46cb-80f3-5d7907b61f6f
dc.identifier.otherORCID: /0000-0002-4283-552X/work/66591895
dc.identifier.otherScopus: 85077329293
dc.identifier.otherWOS: 000504647800007
dc.descriptionFunding: UK EPSRC program “Hybrid Polaritonics” (EP/M025330/1) (JK).en
dc.description.abstractWe theoretically investigate the many-body states of exciton-polaritons that can be observed by pump-probe spectroscopy in high-Q inorganic microcavities. Here, a weak-probe “spin-down” polariton is introduced into a coherent state of “spin-up” polaritons created by a strong pump. We show that the spin down impurities become dressed by excitations of the spin up medium, and form new polaronic quasiparticles that feature two-point and three-point many-body quantum correlations, which, in the low density regime, arise from coupling to the vacuum biexciton and triexciton states respectively. In particular, we find that these correlations generate additional branches and avoided crossings in the spin down optical transmission spectrum that have a characteristic dependence on the spin up -polariton density. Our results thus demonstrate a way to directly observe correlated many-body states in an exciton-polariton system that go beyond classical mean-field theories.
dc.relation.ispartofPhysical Review Lettersen
dc.rightsCopyright © 2019 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleSpectroscopic signatures of quantum many-body correlations in polariton microcavitiesen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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