Neuromorphic metasurface

Metasurfaces have been used to realize optical functions such as focusing and beam steering. They use sub-wavelength nanostructures to control the local amplitude and phase of light. Here we show that such control could also enable a new function of artificial neural inference. We demonstrate that metasurfaces can directly recognize objects by focusing light from an object to different spatial locations that correspond to the class of the object.

[1]  Dirk Englund,et al.  Deep learning with coherent nanophotonic circuits , 2017, 2017 Fifth Berkeley Symposium on Energy Efficient Electronic Systems & Steep Transistors Workshop (E3S).

[2]  Andrei Faraon,et al.  Planar metasurface retroreflector , 2017, Nature Photonics.

[3]  N. Yu,et al.  Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction , 2011, Science.

[4]  Steven G. Johnson,et al.  Inverse design of large-area metasurfaces. , 2018, Optics express.

[5]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[6]  Din Ping Tsai,et al.  Advances in optical metasurfaces: fabrication and applications [Invited]. , 2018, Optics express.

[7]  W. T. Chen,et al.  Visible Wavelength Planar Metalenses Based on Titanium Dioxide , 2017, IEEE Journal of Selected Topics in Quantum Electronics.

[8]  P. Genevet,et al.  Multiwavelength achromatic metasurfaces by dispersive phase compensation , 2014, Science.

[9]  Yi Luo,et al.  All-optical machine learning using diffractive deep neural networks , 2018, Science.

[10]  Lei Ying,et al.  Nanophotonic media for artificial neural inference , 2018, Photonics Research.

[11]  Seyedeh Mahsa Kamali,et al.  Controlling the sign of chromatic dispersion in diffractive optics , 2017, 1701.07178.

[12]  Federico Capasso,et al.  Substrate aberration and correction for meta-lens imaging: an analytical approach. , 2018, Applied optics.

[13]  Federico Capasso,et al.  Achromatic Metasurface Lens at Telecommunication Wavelengths. , 2015, Nano letters.

[14]  Wei Ting Chen,et al.  Achromatic metalens over 60 nm bandwidth in the visible , 2017, 2017 Conference on Lasers and Electro-Optics (CLEO).

[15]  R. Blanchard,et al.  Aberration-free ultrathin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces. , 2012, Nano letters.

[16]  N. Yu,et al.  Flat optics with designer metasurfaces. , 2014, Nature materials.

[17]  Alexander Y. Piggott,et al.  Inverse design and demonstration of a compact and broadband on-chip wavelength demultiplexer , 2015, Nature Photonics.