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quant-ph2026
Bayesian Gill-Massar Bound: An Attainable Lower Bound for Qubit Parameter Estimation
Ke-Han Zhao, Koichi Yamagata, Jun Suzuki
We study lower bounds for Bayesian quantum parameter estimation, with a particular focus on qubit models. While several lower bounds on the Bayes risk have been proposed, including…
quant-ph2026
Bayesian Monotone Metrics for Multiparameter Quantum Estimation
Jianchao Zhang, Koichi Yamagata, Jun Suzuki
Bayesian quantum estimation offers a finite-data framework for quantum sensing and metrology, yet a unified geometric formulation for multiparameter Bayes risk has been lacking. We…