@misc{harris2019apparatus,
 author = {Harris, Nicholas Christopher and Carolan, Jacques Johannes and Prabhu, Mihika and Englund, Dirk Robert and Skirlo, Scott A and Shen, Yichen and Soljacic, Marin},
 month = {April~23},
 note = {US Patent 10,268,232},
 publisher = {Google Patents},
 title = {Apparatus and methods for optical neural network},
 year = {2019}
}