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Researchers created a novel photonic cyclic orbit (PCO) by engineering a pseudomagnetic field domain wall. This breakthrough enables the observation of photonic Weyl orbits and quantum oscillations in photonic systems.

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Area of Science:

  • Topological photonics
  • Condensed matter physics
  • Quantum optics

Background:

  • Weyl orbits are topologically protected trajectories in momentum space, crucial for quantum oscillations in condensed matter.
  • Photonic analogs of Weyl orbits are challenging to realize due to difficulties in generating global pseudomagnetic fields.

Purpose of the Study:

  • To overcome limitations in creating photonic Weyl orbits.
  • To engineer a novel photonic cyclic orbit (PCO) bound to a single Weyl point.
  • To experimentally demonstrate photonic Weyl orbits and their associated quantum phenomena.

Main Methods:

  • Engineering a pseudomagnetic field domain wall to create a localized pseudomagnetic field.
  • Utilizing Weyl points and Fermi arcs in a photonic system.
  • Observing photonic resonances and real-space PCO states.

Main Results:

  • Demonstration of a novel photonic cyclic orbit (PCO) linked to a single Weyl point.
  • Observation of a photonic analog of quantum oscillations, appearing as discrete photonic resonances.
  • Identification of PCO states, including Fermi-arc surface states and chiral zero modes.

Conclusions:

  • The study establishes a new paradigm for topological cyclic orbits in photonics.
  • The engineered pseudomagnetic field domain wall enables practical pathways for 3D light manipulation.
  • Definitive experimental evidence for photonic Weyl orbits has been provided.