Nanowerk  November 29, 2022 Harnessing the full complexity of optical fields requires the complete control of all degrees of freedom within a region of space and time. An international team of researchers (USA – MIT, industry, State University of New York, Rochester Institute of Technology, ARL (Rome), UK, Canada) resolved this challenge with a programmable photonic crystal cavity array enabled by four key advances: (1) near-unity vertical coupling to high-finesse microcavities through inverse design; (2) scalable fabrication by optimized 300 mm full-wafer processing; (3) picometre-precision resonance alignment using automated, closed-loop ‘holographic trimming’; and (4) out-of-plane cavity control via a high-speed μLED […]