Targeted creation and control of photons: thanks to a new design for optical antennas
(PHYSorg.com Physics)

Atoms and molecules can be made to emit photons. However, without external intervention, this process is inefficient and undirected. If it was possible to influence the process of photon creation in terms of efficiency and emission direction, new technical possibilities would be possible, including tiny, multifunctional light pixels that could be used to build three-dimensional displays or reliable single-photon sources for quantum computers or optical microscopes to map individual molecules.