Highly nonlinear polariton materials and nanostructures are essential components for resonant optoelectronic devices with enhanced bandwidth and sensitivity, such as nonlinear optical biosensors, photodetectors, and ultrafast optical switches. In this context, the ability to engineer nonlinear interactions in epsilon-near-zero (ENZ) and phonon-polariton media provides exciting opportunities. In this talk, I will discuss our recent work on the development of polariton and ENZ materials with tailored optical dispersion for resonant nanostructures with non-perturbative Kerr-type nonlinear responses on the silicon chip. In particular, I will present the design and characterization of polariton nanostructures for enhanced infrared photon detection on the Si platform.
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