9-Dec-2025
Helical pulses – flying electromagnetic conches – were observed
Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CASPeer-Reviewed Publication
Helical pulses, shaped like flying electromagnetic conches, long predicted but never directly observed, have now been experimentally realized in both optical and microwave bands. The work shows that light can twist through space and time within a single cycle, forming truly space time nonseparable wave packets. This breakthrough confirms a decades old theoretical prediction and opens new paths for ultrafast communication, topological field control, and advanced imaging.
- Journal
- Nature Communications
- Funder
- National Natural Science Foundation of China, Natural Science Foundation of Sichuan Province, Aeronautical Science Foundation of China, European Research Council, Singapore Ministry of Education (MOE) AcRF Tier 1, Singapore Agency for Science Technology and Research (A*STAR) MTC Individual Research Grants, Spanish Ministry of Science and Innovation