Aligned SPADE shares the log canonical threshold λ=1/2 with direct imaging but gains a subleading advantage, while misaligned binary-SPADE shows different power scaling and an exact blind spot at s*=2θ.
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Ultimate quantum limits show super-resolution for separation of partially coherent sources is achievable for balanced intensities with nuisance parameters and over wider intensity ranges when parameters are known, except at full coherence.
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Singular Asymptotics of SPADE in Quantum Source Discrimination
Aligned SPADE shares the log canonical threshold λ=1/2 with direct imaging but gains a subleading advantage, while misaligned binary-SPADE shows different power scaling and an exact blind spot at s*=2θ.
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Super-resolution of partially coherent bosonic sources
Ultimate quantum limits show super-resolution for separation of partially coherent sources is achievable for balanced intensities with nuisance parameters and over wider intensity ranges when parameters are known, except at full coherence.