title: Operational tomography: fitting of data patterns.
abstract: We build an operational scheme for the quantum state reconstruction based on the fitting of data patterns. Each data pattern corresponds to the response of the measurement setup to a predefined reference state. The set of data patterns can be measured experimentally in the calibration stage preceding to the reconstruction. The quorum of reference states plays the role of a positive operator valued measure in terms of which the reconstruction is done. As the main advantage, the procedure is free of notorious problems with projections into non-normalizable quadrature eigenstates, infinite dimensionality, ill-posed inversion, or imperfect detection.
authors.affiliation: Department of Optics, Palacky University, 17. listopadu 12, 771 46 Olomouc, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Rehácek
authors.forename: D
authors.initials: D
authors.lastname: Mogilevtsev
authors.forename: Z
authors.initials: Z
authors.lastname: Hradil