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Spatial-mode demultiplexing for quantum-inspired superresolution experiments

Published 21 Sep 2025 in physics.optics and quant-ph | (2509.17115v1)

Abstract: Conventional optical imaging is limited by diffraction, preventing discrimination of closely spaced incoherent sources. Inspired by quantum parameter estimation, this thesis explores spatial-mode demultiplexing (SPADE) as a method to overcome this limit by projecting light onto an orthonormal mode basis. In this work, we design and experimentally validate a practical implementation of spatial-mode demultiplexing via Multi-Plane Light Conversion (MPLC).

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