627 citations · 11.1k across the 229 of their papers we have counts for
9 papers · 2 filters
Quantum tomography as a tool for the characterization of optical devices
G. Mauro D'Ariano, Matteo G. A. Paris, Martina De Laurentis +2
We describe a novel tool for the quantum characterization of optical devices. The experimental setup involves a stable reference state that undergoes an unknown quantum transformat…
Improving quantum interferometry by using entanglement (to take a decision you'd better use entanglement)
G. M. D'Ariano, Matteo G. A Paris, Paolo Perinotti
We address the use of entanglement to improve the precision of generalized quantum interferometry, i.e. of binary measurements aimed to determine whether or not a perturbation has…
A quantum measurement of the spin direction
G. M. D'Ariano, P. Lo Presti, M. F. Sacchi
We give a first physical model for the quantum measurement of the spin direction. It is an Arthurs-Kelly model that involves a kind of magnetic-dipole interaction of the spin with…
Two-mode heterodyne phase detection
G. M. D'Ariano, M. F. Sacchi
We present an experimental scheme that achieves ideal phase detection on a two-mode field. The two modes and are the signal and image band modes of an heterodyne detector,…
Using entanglement improves precision of quantum measurements
G. Mauro D'Ariano, Paoloplacido Lo Presti, Matteo G. A. Paris
We show how entanglement can be used to improve the estimation of an unknown transformation. Using entanglement is always of benefit, in improving either the precision or the stabi…
Towards a tomographic picture of a Bose-Einstein condensate
Stefano Mancini, Mauro Fortunato, Paolo Tombesi +1
We investigate by means of numerical simulations the possibilities of tomographic techniques applied to a Bose-Einstein condensate in order to reconstruct its ground state. Essenti…