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Dual-Wavelength Quantum Skyrmions from Liquid Crystal Topological Defects.

Mwezi Koni1, Fazilah Nothlawala1, Vagharshak Hakobyan2

  • 1University of the Witwatersrand, School of Physics, Private Bag 3, Wits 2050, South Africa.

Physical Review Letters
|December 12, 2025
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Summary
This summary is machine-generated.

We introduce a novel spin-orbit strategy to create dual-wavelength quantum skyrmions. This method allows for entangled photon pairs or heralded single-photon states, opening new avenues in quantum physics.

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Area of Science:

  • Quantum physics
  • Topological states of matter
  • Liquid crystal physics

Background:

  • Quantum skyrmions are exotic topological states with potential applications in quantum information.
  • Previous methods lacked the ability to generate dual-wavelength skyrmions or reconfigurable platforms.

Purpose of the Study:

  • To propose and demonstrate a novel spin-orbit strategy for generating dual-wavelength quantum skyrmions.
  • To engineer reconfigurable nonlocal and local skyrmionic topologies.
  • To explore new directions for engineered topological quantum states.

Main Methods:

  • Coupling a two-photon entangled state to an electrically tunable liquid crystal topological defect.
  • Utilizing spin-orbit interactions to engineer skyrmionic topologies.
  • Demonstrating the generation of entangled photon pairs and heralded single-photon states.

Main Results:

  • Successful generation of dual-wavelength quantum skyrmions.
  • Engineering of both nonlocal and local skyrmionic topologies in a reconfigurable platform.
  • Demonstration of skyrmions as entangled photon pairs or heralded single-photon states.

Conclusions:

  • The proposed spin-orbit strategy offers a new pathway for creating advanced quantum states.
  • This approach leverages the topological richness of liquid crystals for quantum applications.
  • The reconfigurable platform enables versatile engineering of topological quantum states.