https://phys.org/news/2018-10-scalable-platform-on-chip-quantum-emitters.html

"The search for scalable quantum light sources has been going on for 20 years, and more recently has become a national priority," says Stefan Strauf, who led the work and is also director of Stevens' Nanophotonic Lab. "This is the first time anyone has achieved a level of spatial control combined with high efficiency on a chip that is scalable, all of which are needed to realize quantum technologies."

The work, to be reported in the Oct. 29 advance online issue of Nature Nanotechnology, describes a new method for creating quantum light sources on demand in any desired location on a chip, by stretching an atom-thin film of semiconducting material over nanocubes made of gold. Like taut cling-wrap, the film stretches over the corners of the nanocubes, imprinting defined locations where single-photon emitters form.