Penn Engineers Design Nanostructured Diamond Metalens For Compact Quantum Technologies

Penn Engineering
Jun 3, 2019 · 6 min read
By finding a certain kind of defect inside a block of diamond and fashioning a pattern of nanoscale pillars on the surface above it, the researchers can control the shape of individual photons emitted by the defect. Because those photons carry information about the spin state of an electron, such a system could be used as the basis for compact quantum technologies. (Illustration: Ann Sizemore Blevins)

By Lauren Salig

At the chemical level, diamonds are no more than carbon atoms aligned in a precise, three-dimensional (3D) crystal lattice. However, even a seemingly flawless diamond contains defects: spots in that lattice where a carbon atom is missing or has been replaced by something else. Some of these defects are…