Overview
- Teams from the University of the Witwatersrand and the University of Bordeaux published a Science Advances paper reporting a campus experiment that sent skyrmion‑encoded laser beams across a roughly 270‑metre free‑space link.
- The researchers encoded information in the light’s topology, a property that stays unchanged under continuous deformation, which lets the data remain readable even when the beam’s shape is heavily distorted.
- Measured fidelity exceeded about 98 percent in typical conditions and fell to roughly 86 percent under the most extreme turbulence the team tested, showing strong but not perfect robustness.
- Because the topological information survives distortion, receivers recovered the payload without measuring or actively correcting beam deformation, which could cut hardware and computing needs for free‑space links.
- The result is an early proof of principle with potential uses in satellite and quantum links and rural connectivity, but it must be scaled, tested over longer ranges and integrated into engineered systems before practical deployment.