493 citations · 12.2k across the 287 of their papers we have counts for
10 papers · 2 filters
Demonstration of a programmable source of two-photon multiqubit entangled states
Simone Cialdi, Davide Brivio, Matteo G. A. Paris
We suggest and demonstrate a novel source of two-photon multipartite entangled states which exploits the transverse spatial structure of spontaneous parametric downconversion toget…
Non-Gaussian states by conditional measurements
Marco G. Genoni, Federica A. Beduini, Alessia Allevi +3
We address realistic schemes for the generation of non-Gaussian states of light based on conditional intensity measurements performed on correlated bipartite states. We consider bo…
Experimental estimation of entanglement at the quantum limit
Giorgio Brida, Ivo Degiovanni, Angela Florio +5
Entanglement is the central resource of quantum information processing and the precise characterization of entangled states is a crucial issue for the development of quantum techno…
Non-Gaussian states produced by close-to-threshold optical parametric oscillators: role of classical and quantum fluctuations
Virginia D'Auria, Corrado de Lisio, Alberto Porzio +3
Quantum states with non-Gaussian statistics generated by optical parametric oscillators (OPO) with fluctuating parameters are studied by means of the Kurtosis excess of the externa…
The discrimination problem for two ground states or two thermal states of the quantum Ising model
Carmen Invernizzi, Matteo G A Paris
We address the one-dimensional quantum Ising model as an example of system exhibiting criticality and study in some details the discrimination problem for pairs of states correspon…
Enhancement of parameter estimation by Kerr interaction
Marco G. Genoni, Carmen Invernizzi, Matteo G. A. Paris
We address quantum estimation of displacement and squeezing parameters by the class of probes made of Gaussian states undergoing Kerr interaction. If we fix the overall energy avai…
Entanglement induced transparency and applications
Stefano Olivares, Matteo G. A. Paris
We point out a symmetry exhibited by pairs of entangled states and discuss its possible applications in quantum information. More specifically, we consider quadripartite systems pr…
State reconstruction by on/off measurements
A. Allevi, A. Andreoni, M. Bondani +7
We demonstrate a state reconstruction technique which provides either the Wigner function or the density matrix of a field mode and requires only avalanche photodetectors, without…
Bayesian estimation in homodyne interferometry
Stefano Olivares, Matteo G. A. Paris
We address phase-shift estimation by means of squeezed vacuum probe and homodyne detection. We analyze Bayesian estimator, which is known to asymptotically saturate the classical C…
An effective method to estimate multidimensional Gaussian states
J. Rehacek, S. Olivares, D. Mogilevtsev +6
A simple and efficient method for characterization of multidimensional Gaussian states is suggested and experimentally demonstrated. Our scheme shows analogies with tomography of f…