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Nonlinear optics

On-chip programmable nonlinearity

Programmable nonlinearities — including control over the response order up to high orders — can now be realized on-chip at ultralow power via field programmability. This advance paves the way for more scalable and energy-efficient photonic computing in applications such as machine learning, optical signal processing and communications, analogue computing and quantum photonics.

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Fig. 1: On‑chip programmable nonlinearity.

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Correspondence to Fei Xia.

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Xia, F. On-chip programmable nonlinearity. Nat. Photon. 19, 662–663 (2025). https://doi.org/10.1038/s41566-025-01710-4

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