title: Optimal data processing for quantum measurements.
abstract: 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.
authors.affiliation: QUIT Group, Dipartimento di Fisica, Pavia, Italy.
authors.forename: G M
authors.initials: GM
authors.lastname: D'Ariano
authors.forename: P
authors.initials: P
authors.lastname: Perinotti