A tiny laser that emits “twisted light” has been unveiled by researchers in the US and Italy. Measuring just 9 μm across, the semiconductor device can produce a beam of light that carries orbital angular momentum. While improvements are needed before the laser can be commercialized, it could someday be used to boost the bandwidth of optical-telecommunication systems. Twisted light could also find use in quantum computing and quantum communications……..
http://nanotechweb.org/cws/article/tech/65765
