Scientists miniaturize quantum optics to boost next-gen processors

Germany has launched SmaraQ, a collaborative research initiative aimed at advancing scalable ion-trap quantum computers by integrating quantum optics directly onto chips. Led by QUDORA Technologies GmbH, AMO GmbH, and Fraunhofer IAF, the project replaces bulky optical setups with compact, chip-based photonic systems. This innovation centers on ultraviolet (UV) waveguides and photonic components made from aluminum nitride (AlN) and aluminum oxide (Al₂O₃), enabling nanometer-scale precision in directing laser light to ion qubits. By eliminating large free-space optics, SmaraQ significantly reduces system size and enhances reliability, facilitating mass production through established semiconductor fabrication techniques. The collaboration leverages complementary expertise: QUDORA integrates photonics into its trapped-ion quantum computing platform and drives commercialization; Fraunhofer IAF develops high-quality epitaxial AlN wafers essential for photonic components; and AMO GmbH applies advanced nanofabrication and lithography to pattern