Introduces semi-classical geometric tensor relating quantum geometric tensor to classical Fisher information matrix and proves a sharpened matrix inequality for multiparameter quantum bounds.
On quantumness in multi- parameter quantum estimation.Journal of Statisti- cal Mechanics: Theory and Experiment, 2019(9):094010, 2019
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Semi-classical geometric tensor in multiparameter quantum information
Introduces semi-classical geometric tensor relating quantum geometric tensor to classical Fisher information matrix and proves a sharpened matrix inequality for multiparameter quantum bounds.