title: Quantum calibration of measurement instrumentation.
abstract: By quantum calibration we name an experimental procedure apt to completely characterize an unknown measurement apparatus by comparing it with a few other calibrated apparatuses. Here we show how to achieve the calibration of an arbitrary measuring apparatus, by using it in combination with a tomographer in a correlation setup with an input bipartite system. The method is robust to imperfections of the tomographer, and works for practically any input state of the bipartite system.
authors.affiliation: QUIT-Quantum Information Theory Group, Dipartimento di Fisica A. Volta Università di Pavia, via A. Bassi 6, I-27100 Pavia, Italy. dariano@unipv.it
authors.forename: Giacomo Mauro
authors.initials: GM
authors.lastname: D'Ariano
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Maccone
authors.forename: Paoloplacido
authors.initials: P
authors.lastname: Lo Presti