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quant-ph2025
The Most Informative Cramér--Rao Bound for Quantum Two-Parameter Estimation with Pure State Probes
Simon K. Yung, C. M. Yung, Lorcán O. Conlon +1
Optimal measurements for quantum multiparameter estimation are complicated by the uncertainty principle. Generally, there is a trade-off between the precision with which different…
quant-ph2025
Saturating the Quantum Cramér--Rao Bound in Prioritised Parameter Estimation
Simon K. Yung, Aritra Das, Jun Suzuki +4
Measurement incompatibility is a cornerstone of quantum mechanics. In the context of estimating multiple parameters of a quantum system, this manifests as a fundamental trade-off b…