Light shines bright from tiny antenna

 作者:阎铡     |      日期:2019-03-15 04:10:04
By Jeff Hecht VISIBLE light should be about as compatible with nanotechnology as a sledgehammer is with a fine Swiss watch. That’s because it has a wavelength of 400 to 700 nanometres, while nanotech structures are measured in tens of nanometres. Yet researchers have found a way to overcome this obstacle, by creating a nanoscale optical antenna which works much like a radio antenna. The device could pave the way for single-photon light emitters that can be used in quantum computation and communications. Nanoscale optical antennas could also transfer light to and from optical fibres,