Small microring array enables large complex-valued matrix multiplication

https://phys.org/news/2022-05-small-microring-array-enables-large.

"photonic complex matrix-vector multiplier chip support arbitrary large-scale and complex-valued matrix multiplications... breaks bottleneck traditional non-coherent optical computing schemes... enables artificial intelligence applications... Walsh transforms and image convolutions. Their idea is to design matrix decomposition and matrix partitioning intelligent algorithms for the microring array architecture to extend matrix multiplications from the real to the complex domain and from small scale to large scale"