By levitating a tiny, nano-sized diamond using light, physicists in the US and Finland have created a controllable quantum system that has optical, mechanical and spin degrees of freedom. Based on a single “nitrogen vacancy” (NV) defect in the diamond, the system could be used in devices that measure extremely weak forces – or even to create “Schrödinger’s cat states”……
http://nanotechweb.org/cws/article/tech/62538
