Preprint
Oct 2026
Learning Many-Body Hamiltonians Using a Local Probe
Hamiltonian learning provides a systematic framework for reconstructing unknown quantum dynamics. However, existing protocols typically assume direct measurement access to the entire system. With fast single-qubit control and a connected reference backbone, we show that a single measurable qubit suffices to learn all $...
Su-Ying Liu, Zi-Tai Xu, Alexey V. Gorshkov et al.
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