Classical optical neural network exhibits 'quantum speedup'

https://phys.org/news/2024-04-classical-optical-neural-network-quantum.html

"optical neural networks (low: energy consumption, crosstalk, transmission latency) and quantum neural networks (algorithmic acceleration such as faster model convergence speed)... speedup analog to quantum neural network... classical optical correlations as information carrier, mimicking that of quantum... convolutional and pooling operation on correlated optical state... neural network includes: correlated light source, convolution, pooling, detections... properties of quantum neural network, cheaper... big data"