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Cascaded linear and non-linear operations form the basis for all integrated photonic applications ranging from routing to computations. Because of the weak interaction between photons, achieving substantial optical nonlinearities at low power remains challenging. In this work, we demonstrate a new photonic framework where signals carried in different wavelengths can be added and encoded in a new wavelength with low optical loss. Using this approach, we can realize highly nonlinear all-optical neurons operated fully in the near-infrared domain at low power.
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Yi Zhang, Nikolaos Farmakidis, June Sang Lee, Bowei Dong, Samarth Aggarwal, Yuhan He, Harish Bhaskaran, "Bosonic control in integrated photonics," Proc. SPIE PC12889, Integrated Optics: Devices, Materials, and Technologies XXVIII, PC128890R (13 March 2024); https://doi.org/10.1117/12.3001007