Linear photonic reservoir computer based on coherently driven passive cavity

We present the first experimental implementation of a passive linear reservoir computer working in coherent light for analogue signal processing. By using an optical cavity, the neuron states are coded by temporal multiplexing in the amplitude and the phase of a coherent electromagnetic field. We report the performances obtained with our experimental setup compared to simulations on some benchmark tasks. In the future, our goal will be to realise a high-speed implementation of our system in integrated photonics.