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Updated: Nov 27, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Vortices in Nonequilibrium Photon Condensates.

Vladimir N Gladilin1, Michiel Wouters1

  • 1TQC, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium.

Physical Review Letters
|December 4, 2020
PubMed
Summary

We theoretically study photon condensate vortices, finding pumping and losses create finite core sizes. These vortices exhibit unique properties like oblate shapes and spontaneous nucleation, differing from prior systems.

Area of Science:

  • Quantum optics
  • Condensed matter physics

Background:

  • Photon condensates are a novel quantum system.
  • Vortices are key topological excitations in condensates.
  • Current experiments involve negligible interactions.

Purpose of the Study:

  • To theoretically investigate vortex properties in photon condensate arrays.
  • To understand vortex core formation and dynamics in non-interacting systems.

Main Methods:

  • Theoretical modeling of photon condensate arrays.
  • Analysis of vortex core size, shape, and nucleation dynamics.

Main Results:

  • Pumping and losses determine finite vortex core size, even without interactions.
  • Vortices exhibit self-acceleration and pair generation, similar to lasers.

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  • Distinct features include oblate core shape and spontaneous nucleation in the core region.

    • Conclusions:

    • Photon condensate vortices possess unique characteristics driven by pumping and tunneling.
    • These findings offer insights into non-equilibrium quantum systems.
    • The study highlights differences from lasers and polariton condensates.