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Larson and Saleh [Optica5, 1382 (2018)OPTIC82334-253610.1364/OPTICA.5.001382] suggest that Rayleigh’s curse can recur and become unavoidable if the two sources are partially coherent. Here we show that their calculations and assertions have fundamental problems, and spatial-mode demultiplexing can overcome Rayleigh’s curse even for partially coherent sources.
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Tsang et al. (2019) studied this question.
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