Under uniform background noise, two-mode SPADE outperforms direct imaging for one-vs-two-source discrimination and approaches the quantum Chernoff limit in the sub-Rayleigh regime, as shown experimentally.
Far-field superresolution of thermal electromagnetic sources at the quantum limit,
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Noise-robust discrimination of incoherent point sources with spatial-mode demultiplexing
Under uniform background noise, two-mode SPADE outperforms direct imaging for one-vs-two-source discrimination and approaches the quantum Chernoff limit in the sub-Rayleigh regime, as shown experimentally.