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Conferences > CLEO_SI > 2022 > STh5G > STh5G.2

Inference and Gradient Measurement for Backpropagation in Photonic Neural Networks

Sunil Pai, Tyler W. Hughes, Taewon Park, Ben Bartlett, Ian Williamson, Momchil Minkov, Maziyar Milanizadeh, Nathnael Abebe, Francesco Morichetti, Andrea Melloni, Olav Solgaard, Shanhui Fan, and David A. B. Miller

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Abstract

We experimentally demonstrate in situ backpropagation in a programmable nanophotonic interferometer network, achieving inference accuracies matching digital implementations. Error gradients are computed by simultaneously measuring optical interference at intermediate network components, eliminating expensive digital computations.

© 2022 The Author(s)

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