-->The experimental setup. Courtesy: Hajime Ishihara and Keiji Sasaki
A method of optically selecting and sorting nanoparticles according to their quantum mechanical properties has been developed by researchers in Japan. The method could prove a crucial tool for makers of nanostructures that have applications in quantum sensing, biological imaging and quantum information technology.
Scientists have several ways of manipulating and positioning tiny objects without touching them. Optical tweezers, for example, use a highly focused laser beam to generate optical forces