627 citations · 11.1k across the 229 of their papers we have counts for
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Optimized quantum-optical communications in the presence of loss
G. M. D'Ariano, M. F. Sacchi
We consider the effect of loss on quantum-optical communication channels. The channel based on direct detection of number states, which for a lossless transmission line would achie…
The Quantum Tomographic Roulette Wheel
G. M. D'Ariano, M. G. A. Paris
Random-phase homodyne tomography of the field intensity is a concrete example of the Quantum Roulette of Helstrom. In this paper we give the explicit POM of such measurement and co…
Optical von Neumann measurement
G. M. D'Ariano, M. F. Sacchi
We present an optical scheme that realizes the standard von Neumann measurement model, providing an indirect measurement of a quadrature of the field with controllable Gaussian sta…
Trace forms for the generalized Wigner functions
G. M. D'Ariano, M. F. Sacchi
We derive simple formulas connecting the generalized Wigner functions for -ordering with the density matrix, and vice-versa. These formulas proved very useful for quantum mechan…
Added noise in homodyne measurement of field-observables
Giacomo M. D'Ariano, Matteo G. A. Paris
Homodyne tomography provides a way for measuring generic field-operators. Here we analyze the determination of the most relevant quantities: intensity, field, amplitude and phase.…
Equivalence between squeezed-state and twin-beam communication channels
Giacomo Mauro D'Ariano, Massimiliano Sacchi
We show the equivalence between two different communication schemes that employ a couple of modes of the electromagnetic field. One scheme uses unconventional heterodyne detection,…