Photonic/optical neural networks are an interesting related area of research, using light interference to implement convolution and other operations without (I

Photonic/optical neural networks are an interesting related area of research, using light interference to implement convolution and other operations without (I believe?) needing a bitwise representation of intensity. https://www.nature.com/articles/s41467-020-20719-7 https://www.nature.com/articles/s41467-020-20719-7 https://opg.optica.org/optica/fulltext.cfm?uri=optica-5-7-864&id=395466 https://opg.optica.org/optica/fulltext.cfm?uri=optica-5-7-86...