A nanoantenna for long-distance, ultra-secure communication

Scientists from Osaka University have made a breakthrough in quantum information networks by considerably improving photon-to-electron conversion via a metal nanostructure. The technique involves using a nanoantenna designed from concentric gold rings to concentrate light onto a single quantum dot, resulting in amplified photon absorption and a voltage readout. This discovery enhances the prospects of leveraging well-established nanophotonics in the direction of quantum communication and data networks.