Lumai is an Oxford-based start-up focussed on the development of optical computing solutions for machine learning. With the modern-day AI revolution coming with ever-increasing computational demands, optical computing offers orders of magnitude improvements in speed and power efficiency over traditional digital electronics. Lumai spun out of the world-leading experimental optics research group of Professor A.I. Lvovsky with the vision of developing end-to-end all-optical neural networks where the information flow and calculations are minimally reliant on electronic processing.