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Optimal data processing for quantum measurements. 2007

G M D'Ariano, and P Perinotti
QUIT Group, Dipartimento di Fisica, Pavia, Italy.

We consider the general measurement scenario in which the ensemble average of an operator is determined via suitable data processing of the outcomes of a quantum measurement described by a positive operator-valued measure. We determine the optimal processing that minimizes the statistical error of the estimation.

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