A symmetry-projection theorem block-diagonalizes the quantum Fisher information matrix and Uhlmann curvature across symmetry sectors, giving weakly compatible multiparameter channels and a covariance-based sensitivity formula.
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Symmetry-Projected Weakly Compatible Multiparameter Quantum Sensing
A symmetry-projection theorem block-diagonalizes the quantum Fisher information matrix and Uhlmann curvature across symmetry sectors, giving weakly compatible multiparameter channels and a covariance-based sensitivity formula.