Plasmonic computing of spatial differentiation.

PLUTO / PLUTO-2 Spatial Light Modulators
Adaptive Optics / Wavefront Control Imaging/ Image Processing Optical Computing / Quantum Optics
Published on:
Authors: Zhu, Tengfeng and Zhou, Yihan and Lou, Yijie and Ye, Hui and Qiu, Min and Ruan, Zhichao and Fan, Shanhui
Abstract:

“Optical analog computing offers high-throughput low-power-consumption operation for specialized computational tasks. Traditionally, optical analog computing in the spatial domain uses a bulky system of lenses and filters. Recent developments in metamaterials enable the miniaturization of such computing elements down to a subwavelength scale. However, the required metamaterial consists of a complex array of meta-atoms, and direct demonstration of image processing is challenging. Here, we show that the interference effects associated with surface plasmon excitations at a single metal-dielectric interface can perform spatial differentiation. And we experimentally demonstrate edge detection of an image without any Fourier lens. This work points to a simple yet powerful mechanism for optical analog computing at the nanoscale.”

Open Access

Publication: Nature Communications
Issue/Year: Nature Communications
DOI: 10.1038/ncomms15391
Link: https://doi.org/10.1038/ncomms15391

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