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End-to-End Nanophotonic Inverse Design for Imaging and Polarimetry

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Document pages: 19 pages

Abstract: By co-designing a meta-optical front end in conjunction with animage-processing back end, we demonstrate noise sensitivity and compactnesssubstantially superior to either an optics-only or a computation-only approach,illustrated by two examples: subwavelength imaging and reconstruction of thefull polarization coherence matrices of multiple light sources. Our end-to-endinverse designs couple the solution of the full Maxwell equations---exploitingall aspects of wave physics arising in subwavelength scatterers---withinverse-scattering algorithms in a single large-scale optimization involving$ gtrsim 10^4$ degrees of freedom. The resulting structures scatter light in away that is radically different from either a conventional lens or a randommicrostructure, and suppress the noise sensitivity of the inverse-scatteringcomputation by several orders of magnitude. Incorporating the full wave physicsis especially crucial for detecting spectral and polarization information thatis discarded by geometric optics and scalar diffraction theory.

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