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Highly nonlinear trion-polaritons in a monolayer semiconductor

Highly nonlinear trion-polaritons in a monolayer semiconductor

Title: Highly nonlinear trion-polaritons in a monolayer semiconductor
Author: Emmanuele, R. P. A.
Sich, M.
Kyriienko, O.
Shahnazaryan, V.
Withers, F.
Catanzaro, A.
Walker, P. M.
Benimetskiy, F. A.
Skolnick, M. S.
Tartakovskii, A. I.
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Date: 2020-07-17
Language: English
Scope: 3589
University/Institute: Háskóli Íslands
University of Iceland
School: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Raunvísindastofnun (HÍ)
Science Institute (UI)
Series: Nature Communications;11(1)
ISSN: 2041-1723
DOI: 10.1038/s41467-020-17340-z
Subject: Trion-polaritons; Monolayer semiconductor; Photon; TMDCs; Nonlinearity; Hálfleiðarar; Ljósfræði
URI: https://hdl.handle.net/20.500.11815/2139

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Emmanuele, R.P.A., Sich, M., Kyriienko, O. et al. Highly nonlinear trion-polaritons in a monolayer semiconductor. Nature Communications 11, 3589 (2020). https://doi.org/10.1038/s41467-020-17340-z


Highly nonlinear optical materials with strong effective photon-photon interactions are required for ultrafast and quantum optical signal processing circuitry. Here we report strong Kerr-like nonlinearities by employing efficient optical transitions of charged excitons (trions) observed in semiconducting transition metal dichalcogenides (TMDCs). By hybridising trions in monolayer MoSe2 at low electron densities with a microcavity mode, we realise trion-polaritons exhibiting significant energy shifts at small photon fluxes due to phase space filling. We find the ratio of trion- to neutral exciton–polariton interaction strength is in the range from 10 to 100 in TMDC materials and that trion-polariton nonlinearity is comparable to that in other polariton systems. The results are in good agreement with a theory accounting for the composite nature of excitons and trions and deviation of their statistics from that of ideal bosons and fermions. Our findings open a way to scalable quantum optics applications with TMDCs.


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