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University of British Columbia
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Entangling $t$ quantum copies during measurement improves state tomography efficiency by at most a factor of $\sqrt{t}$, showing that reaching optimal collective sample rates strictly requires entangling $\Omega(r^2)$ samples regardless of classical adaptivity.
PixSGR achieves unprecedented image fidelity by enabling non-local refinement in pixel diffusion without the computational burden of dense attention.
