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    "headline": "The Photonic Solver Skipped the Eigenvectors",
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    "dek": "A differentiable coupled-wave method directly builds scattering matrices for anisotropic structures.",
    "summary": "A differentiable coupled-wave method directly builds scattering matrices for anisotropic structures.",
    "body_text": "The framework avoids eigendecomposition of large non-Hermitian matrices, supports GPU acceleration and automatic differentiation, and reports a 25-fold speedup at comparable accuracy for forward analysis and inverse design.",
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      "photonics",
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      "title": "arXiv preprint 2608.06185",
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    "title": "The Photonic Solver Skipped the Eigenvectors",
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