End-to-end optimization of metasurfaces for imaging with compressed sensing Arya, Gaurav Li, William F. Roques-Carmes, Charles Soljačić, Marin Johnson, Steven G. Lin, Zin end-to-end optimization metasurface imaging compressed sensing ddc:530 We present a framework for the end-to-end optimization of metasurface imaging systems that reconstruct targets using compressed sensing, a technique for solving underdetermined imaging problems when the target object exhibits sparsity (i.e. the object can be described by a small number of non-zero values, but the positions of these values are unknown). We nest an iterative, unapproximated compressed sensing reconstruction algorithm into our end-to-end optimization pipeline, resulting in an interpretable, data-efficient method for maximally leveraging metaoptics to exploit object sparsity. We apply our framework to super-resolution imaging and high-resolution depth imaging with a phase-change material. In both situations, our end-to-end framework computationally discovers optimal metasurface structures for compressed sensing recovery, automatically balancing a number of complicated design considerations to select an imaging measurement matrix from a complex, physically constrained manifold with millions ofdimensions. The optimized metasurface imaging systems are robust to noise, significantly improving over random scattering surfaces and approaching the ideal compressed sensing performance of a Gaussian matrix, showing how a physical metasurface system can demonstrably approach the mathematical limits of compressed sensing. American Chemical Society 2024 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_2df8fbb1 https://research-explorer.ista.ac.at/record/21672 Arya G, Li WF, Roques-Carmes C, Soljačić M, Johnson SG, Lin Z. End-to-end optimization of metasurfaces for imaging with compressed sensing. <i>ACS Photonics</i>. 2024. doi:<a href="https://doi.org/10.1021/acsphotonics.4c00259">10.1021/acsphotonics.4c00259</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1021/acsphotonics.4c00259 info:eu-repo/semantics/altIdentifier/e-issn/2330-4022 info:eu-repo/semantics/altIdentifier/arxiv/2201.12348 info:eu-repo/semantics/openAccess