493 citations · 12.2k across the 287 of their papers we have counts for
12 papers · 2 filters
Non-Gaussianity of quantum states: an experimental test on single-photon added coherent states
Marco Barbieri, Nicolò Spagnolo, Marco G. Genoni +5
Non Gaussian states and processes are useful resources in quantum information with continuous variables. An experimentally accessible criterion has been proposed to measure the deg…
Balancing efficiencies by squeezing in realistic eight-port homodyne detection
Juha-Pekka Pellonpää, Jussi Schultz, Matteo G. A. Paris
We address measurements of covariant phase observables (CPOs) by means of realistic eight-port homodyne detectors. We do not assume equal quantum efficiencies for the four photodet…
Optimal detection of losses by thermal probes
Carmen Invernizzi, Matteo G. A. Paris, Stefano Pirandola
We consider the discrimination of lossy bosonic channels and focus to the case when one of the values for the loss parameter is zero, i.e., we address the detection of a possible l…
Continuous variable quantum key distribution in non-Markovian channels
Ruggero Vasile, Stefano Olivares, Matteo G A Paris +1
We address continuous variable quantum key distribution (QKD) in non-Markovian lossy channels and show how the non-Markovian features may be exploited to enhance security and/or to…
Optimal unambiguous comparison of two unknown squeezed vacua
Stefano Olivares, Michal Sedlak, Peter Rapcan +2
We propose a scheme for unambiguous state comparison (USC) of two unknown squeezed vacuum states of an electromagnetic field. Our setup is based on linear optical elements and phot…
Programmable entanglement oscillations in a non Markovian channel
Simone Cialdi, Davide Brivio, Enrico Tesio +1
We suggest and demonstrate an all-optical experimental setup to observe and engineer entanglement oscillations of a pair of polarization qubits in a non-Markovian channel. We gener…
Quantifying non-Gaussianity for quantum information
Marco G. Genoni, Matteo G. A. Paris
We address the quantification of non-Gaussianity of states and operations in continuous-variable systems and its use in quantum information. We start by illustrating in details the…
Programmable purification of type-I polarization-entanglement
Simone Cialdi, Davide Brivio, Matteo G A Paris
We suggest and demonstrate a scheme to compensate spatial and spectral decoherence effects in the generation of polarization entangled states by type-I parametric downconversion. I…
Stationary entanglement in N-atom subradiant degenerate cascade systems
Massimo Borrelli, Nicola Piovella, Matteo G. A. Paris
We address ultracold -atom degenerate cascade systems and show that stationary subradiant states, already observed in the semiclassical regime, also exist in a fully quantum reg…
Gaussian quantum discord
Paolo Giorda, Matteo G. A. Paris
We extend the quantum discord to continuous variable systems and evaluate Gaussian quantum discord C(ρ) for bipartite Gaussian states. In particular, for squeezed thermal states (S…
The role of initial entanglement and nonGaussianity in the decoherence of photon number entangled states evolving in a noisy channel
Michele Allegra, Paolo Giorda, Matteo G. A. Paris
We address the degradation of continuous variable (CV) entanglement in a noisy channel focusing on the set of photon-number entangled states. We exploit several separability criter…
Quantum communication with photon-number entangled states and realistic photodetection
Vladyslav C. Usenko, Matteo G. A. Paris
We address the effects of realistic photodetection, with nonunit quantum efficiency and background noise (dark counts), on the performances of quantum communication schemes based o…