MIT News   December 2, 2024 Optical systems can perform linear matrix operations at an exceptionally high rate and efficiency. However, demonstrating coherent, ultralow-latency optical processing of deep neural networks has remained an outstanding challenge. A team of researchers in the US (MIT, industries) realized such a system in a scalable photonic integrated circuit that monolithically integrated multiple coherent optical processor units for matrix algebra and nonlinear activation functions into a single chip and experimentally demonstrated fully integrated coherent optical neural network architecture for a deep neural network with six neurons and three layers that optically computed both linear and nonlinear […]