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Optically trapped room temperature polariton condensate in an organic semiconductor

Author

Listed:
  • Mengjie Wei

    (University of St Andrews)

  • Wouter Verstraelen

    (Nanyang Technological University)

  • Konstantinos Orfanakis

    (University of St Andrews)

  • Arvydas Ruseckas

    (University of St Andrews)

  • Timothy C. H. Liew

    (Nanyang Technological University)

  • Ifor D. W. Samuel

    (University of St Andrews)

  • Graham A. Turnbull

    (University of St Andrews)

  • Hamid Ohadi

    (University of St Andrews)

Abstract

The strong nonlinearities of exciton-polariton condensates in lattices make them suitable candidates for neuromorphic computing and physical simulations of complex problems. So far, all room temperature polariton condensate lattices have been achieved by nanoimprinting microcavities, which by nature lacks the crucial tunability required for realistic reconfigurable simulators. Here, we report the observation of a quantised oscillating nonlinear quantum fluid in 1D and 2D potentials in an organic microcavity at room temperature, achieved by an on-the-fly fully tuneable optical approach. Remarkably, the condensate is delocalised from the excitation region by macroscopic distances, leading both to longer coherence and a threshold one order of magnitude lower than that with a conventional Gaussian excitation profile. We observe different mode selection behaviour compared to inorganic materials, which highlights the anomalous scaling of blueshift with pump intensity and the presence of sizeable energy-relaxation mechanisms. Our work is a major step towards a fully tuneable polariton simulator at room temperature.

Suggested Citation

  • Mengjie Wei & Wouter Verstraelen & Konstantinos Orfanakis & Arvydas Ruseckas & Timothy C. H. Liew & Ifor D. W. Samuel & Graham A. Turnbull & Hamid Ohadi, 2022. "Optically trapped room temperature polariton condensate in an organic semiconductor," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34440-0
    DOI: 10.1038/s41467-022-34440-0
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    References listed on IDEAS

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    1. J. Kasprzak & M. Richard & S. Kundermann & A. Baas & P. Jeambrun & J. M. J. Keeling & F. M. Marchetti & M. H. Szymańska & R. André & J. L. Staehli & V. Savona & P. B. Littlewood & B. Deveaud & Le Si D, 2006. "Bose–Einstein condensation of exciton polaritons," Nature, Nature, vol. 443(7110), pages 409-414, September.
    2. M. Dusel & S. Betzold & O. A. Egorov & S. Klembt & J. Ohmer & U. Fischer & S. Höfling & C. Schneider, 2020. "Room temperature organic exciton–polariton condensate in a lattice," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    3. S. Klembt & T. H. Harder & O. A. Egorov & K. Winkler & R. Ge & M. A. Bandres & M. Emmerling & L. Worschech & T. C. H. Liew & M. Segev & C. Schneider & S. Höfling, 2018. "Exciton-polariton topological insulator," Nature, Nature, vol. 562(7728), pages 552-556, October.
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