Creating functional defect on carbon nanotube for fabrication of room-temperature single- photon emitter of fiber-optic-compatible frequencies

https://phys.org/news/2025-12-fabricating-photon-sources-carbon-nanotubes.html

"difficult controlling how many light-emitting points (defects) nanotube has/ where located... overcome by stretching nanotube across microscopic trench, exposing nanotube to iodobenzene vapor, then focused UV laser strikes specific spot on nanotube stopping as soon as 1 photon-emitting point (defect) created... controlling emitter's position to within a μm enables nanotube integration into photonic circuits on chips... unhackable data transmission"