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Exciton-polariton ring Josephson junction

Author

Listed:
  • Nina Voronova

    (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
    Skolkovo IC)

  • Anna Grudinina

    (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
    Skolkovo IC)

  • Riccardo Panico

    (Institute of Nanotechnology
    Universität Bonn)

  • Dimitris Trypogeorgos

    (Institute of Nanotechnology)

  • Milena Giorgi

    (Institute of Nanotechnology)

  • Kirk Baldwin

    (Princeton University)

  • Loren Pfeiffer

    (Princeton University)

  • Daniele Sanvitto

    (Institute of Nanotechnology)

  • Dario Ballarini

    (Institute of Nanotechnology)

Abstract

Macroscopic coherence in quantum fluids allows the observation of interference effects in their wavefunctions, and enables applications such as superconducting quantum interference devices based on Josephson tunneling. The Josephson effect manifests in both fermionic and bosonic systems, and has been well studied in superfluid helium and atomic Bose-Einstein condensates. In exciton-polariton condensates—that offer a path to integrated semiconductor platforms—creating weak links in ring geometries has so far remained challenging. In this work, we realize a Josephson junction in a polariton ring condensate. Using optical control of the barrier, we induce net circulation around the ring and demonstrate both superfluid-hydrodynamic and the Josephson regime characterized by a sinusoidal tunneling current. Our theory in terms of the free-energy landscapes explains the appearance of these regimes using experimental values. These results show that weak links in ring condensates can be explored in optical integrated circuits and hold potential for room-temperature applications.

Suggested Citation

  • Nina Voronova & Anna Grudinina & Riccardo Panico & Dimitris Trypogeorgos & Milena Giorgi & Kirk Baldwin & Loren Pfeiffer & Daniele Sanvitto & Dario Ballarini, 2025. "Exciton-polariton ring Josephson junction," Nature Communications, Nature, vol. 16(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55119-8
    DOI: 10.1038/s41467-024-55119-8
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    References listed on IDEAS

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    1. Xuekai Ma & Bernd Berger & Marc Aßmann & Rodislav Driben & Torsten Meier & Christian Schneider & Sven Höfling & Stefan Schumacher, 2020. "Realization of all-optical vortex switching in exciton-polariton condensates," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    2. Kalyani Sukhatme & Yury Mukharsky & Talso Chui & David Pearson, 2001. "Observation of the ideal Josephson effect in superfluid 4He," Nature, Nature, vol. 411(6835), pages 280-283, May.
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