Parallel convolutional processing using an integrated photonic tensor core by Feldmann, J, Youngblood, N, Karpov, M, Gehring, H, Li, X, Stappers, M, Le Gallo, M, Fu, X, Lukashchuk, A, Raja, AS, Liu, J, Wright, CD, Sebastian, A, Kippenberg, TJ, Pernice, WHP, Bhaskaran, H