Experimental demonstration of entangled dual-comb spectroscopy enables detection below quantum limits.
We introduce and experimentally demonstrate entangled dual-comb spectroscopy (EDCS) that surmounts the fundamental limits of traditional DCS. EDCS employs tailored entangled spectral structures, enabling simultaneous detection of comb lines below the standard quantum limit.
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Hariri et al. (2025) studied this question.
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