Securing optical communications by hiding information within light pulses' physical structure; reliable even in noisy environments

https://www.eurekalert.org/news-releases/1124256

"information encoded into beam's spatiotemporal phase structure shapes light pulse over time/ space, signal appearing as uniform beam with no detectable intensity/ size changes... data reconstructed only by receiver synchronized with sender/ uses specific interference pattern deciphering phase structure... can't even capture data'a digital version to attempt hacking later... 2nd security layer: sender/ receiver agree on randomized sequence, real data among decoys... 6G, satellite/ free-space optics, critical infrastructure"