Scientists put quantum optics on a chip, bringing scalable quantum computers close

German researchers launched SmaraQ, a collaborative project that integrates quantum optics directly onto computer chips to make ion-trap quantum computers more scalable. Traditional ion-trap systems require bulky optical assemblies with mirrors and lenses to control qubits, but SmaraQ develops ultraviolet waveguides using aluminum nitride that deliver laser light with nanometer-scale precision. This breakthrough eliminates complex free-space optics and enables mass production of quantum processors using standard semiconductor manufacturing methods.