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This presentation delves into quantum imaging by introducing parameter estimation, Fisher Information, and the Cramér–Rao bound, emphasising their role in revolutionising imaging and measurement. It critiques classical imaging's Rayleigh criterion and its limitations, advocating for quantum approaches like SPADE to enable superresolution beyond classical boundaries. The mechanics of Spatial Mode Demultiplexing (SPADE) are explored, highlighting its precision and ability to surpass Rayleigh's...