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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Photospin-orbit coupling in photonic structures.

Fredrik Jonsson1, Christos Flytzanis

  • 1EPSRC Nanophotonics Portfolio Centre, School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom.

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Nonlocality in photonic structures influences eigenmode configuration. This leads to a photospin-orbit interaction, similar to electron spin-orbit interaction, impacting photospin transport and photospintronics.

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Area of Science:

  • Photonics
  • Condensed Matter Physics
  • Quantum Optics

Background:

  • Nonlocality in constitutive relations is crucial for understanding advanced optical phenomena.
  • Optical activity in photonic structures is a key area of research.
  • Electron spin-orbit interaction is a well-established phenomenon in semiconductors.

Purpose of the Study:

  • To investigate the impact of nonlocality on photonic structures' eigenmode configuration and distribution.
  • To identify the underlying physical mechanism responsible for these changes.
  • To explore potential applications in photospin transport and photospintronics.

Main Methods:

  • Theoretical analysis of constitutive relations including nonlocality.
  • Investigation of eigenmode properties in photonic structures.
  • Analogical comparison with electron spin-orbit interaction in semiconductors.

Main Results:

  • Nonlocality significantly alters eigenmode configuration and distribution in photonic structures.
  • A photospin-orbit interaction analogous to electron spin-orbit interaction is identified as the primary mechanism.
  • The effect is comparable to a magnetic field dependent on photon quasimomentum.

Conclusions:

  • Nonlocality is essential for a complete description of photonic structures.
  • The photospin-orbit interaction offers new avenues for controlling light-matter interactions.
  • This research has implications for the development of photospintronics and novel optical devices.