It Compresses Photons 10,000 Times Thinner Than a Human Hair 

…A research team from DTU has succeeded in designing and building a structure, a so-called dielectric nanocavity, which concentrates light in a volume that it is 12 times below the diffraction limit – inside a dielectric material…

…”Although computer calculations show that you can concentrate light in a point that is infinitely small, this only applies in theory. The actual results are limited by how small details can be made, for example, on a microchip,” says Marcus Albrechtsen, PhD-student at DTU Electro…

…This is a fundamental scientific breakthrough and can be important for multiple fields, including energy-efficient computers and quantum technology…

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