First experimental demonstration of dipole-phonon quantum logic for spectroscopy: measuring CaO+ Ω-doublet splitting at 454±1 kHz with 11.7σ significance using a trapped Ca+/CaO+ ion chain. Advances quantum control and sensing.
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@informaq.bsky.social@informaq.bsky.socialOptimized quantum probes substantially outperform conventional laser spectroscopy for molecular identification under photon-number constraints, with advantages robust to realistic losses and extended to multi-frequency identification scenarios.