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Highly nonlinear trion-polaritons in a monolayer semiconductor

Author

Listed:
  • R. P. A. Emmanuele

    (The University of Sheffield)

  • M. Sich

    (The University of Sheffield)

  • O. Kyriienko

    (University of Exeter
    ITMO University)

  • V. Shahnazaryan

    (ITMO University
    Institute of Physics, Polish Academy of Sciences)

  • F. Withers

    (College of Engineering, Mathematics and Physical Sciences, University of Exeter)

  • A. Catanzaro

    (The University of Sheffield)

  • P. M. Walker

    (The University of Sheffield)

  • F. A. Benimetskiy

    (ITMO University)

  • M. S. Skolnick

    (The University of Sheffield
    ITMO University)

  • A. I. Tartakovskii

    (The University of Sheffield)

  • I. A. Shelykh

    (ITMO University
    Science Institute, University of Iceland)

  • D. N. Krizhanovskii

    (The University of Sheffield
    ITMO University)

Abstract

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.

Suggested Citation

  • R. P. A. Emmanuele & M. Sich & O. Kyriienko & V. Shahnazaryan & F. Withers & A. Catanzaro & P. M. Walker & F. A. Benimetskiy & M. S. Skolnick & A. I. Tartakovskii & I. A. Shelykh & D. N. Krizhanovskii, 2020. "Highly nonlinear trion-polaritons in a monolayer semiconductor," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17340-z
    DOI: 10.1038/s41467-020-17340-z
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