#^Quantum light switch built from atomically thin mirrorBerlin, Germany (SPX) Jan 09, 2026

Controlling light across scales, from microscopes and telescopes down to nanometers, is a central challenge in modern optics. Researchers at the University of Amsterdam have now demonstrated a nanoscale mirror whose reflectivity can be switched on and off electrically using quantum effects in an atomically thin material. Physicists Tom Hoekstra and Jorik van de Groep of the UvA-Institute o