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Yu-Tong Li

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Preprint Sep 2026

Fundamental Limits of Quantum Metrology Beyond Fixed Causal Order

Quantum metrology with indefinite causal order (ICO) has attracted intense interest due to its potential to surpass the limitations of conventional fixed-order strategies. A key open question is whether ICO can fundamentally enhance asymptotic precision scaling. In this work, we bridge this gap for the estimation of a...

Wen-Jie Wei, Yu-Tong Li, Sheng-Shi Pang · 1 citation

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