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Topological rejection of noise by quantum skyrmions

Author

Listed:
  • Pedro Ornelas

    (University of the Witwatersrand)

  • Isaac Nape

    (University of the Witwatersrand)

  • Robert Mello Koch

    (Huzhou University
    University of the Witwatersrand)

  • Andrew Forbes

    (University of the Witwatersrand)

Abstract

An open challenge in the context of quantum information processing and communication is improving the robustness of quantum information to environmental contributions of noise, a severe hindrance in real-world scenarios. Here, we show that quantum skyrmions and their nonlocal topological observables remain resilient to noise even as typical entanglement witnesses and measures of the state decay. This allows us to introduce the notion of digitization of quantum information based on our discrete topological quantum observables, foregoing the need for robustness of entanglement. We compliment our experiments with a full theoretical treatment that unlocks the quantum mechanisms behind the topological behavior, explaining why the topology leads to robustness. Our approach holds exciting promise for intrinsic quantum information resilience through topology, highly applicable to real-world systems such as global quantum networks and noisy quantum computers.

Suggested Citation

  • Pedro Ornelas & Isaac Nape & Robert Mello Koch & Andrew Forbes, 2025. "Topological rejection of noise by quantum skyrmions," Nature Communications, Nature, vol. 16(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58232-4
    DOI: 10.1038/s41467-025-58232-4
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