Scientists are tying laser beams into literal knots so the data inside doesn't get scrambled by the wind or weather.
arXiv · March 13, 2026 · 2603.11548
Why it matters
Atmospheric turbulence like wind, heat, and fog usually distorts laser signals, making long-distance optical internet difficult. By encoding data into these unchangeable mathematical knots of light, the information becomes physically robust and immune to weather interference.
From the abstract
In this paper, we propose a novel free-space optical (FSO) communication system utilizing optical skyrmions. We introduce a scheme referred to as skyrmion number modulation (SkM), which employs index modulation by encoding information onto the skyrmion number, a topological invariant preserved during free-space propagation. This topological nature offers the potential for inherent robustness against atmospheric turbulence-induced wavefront distortions, which limit the performance of conventional