493 citations · 12.2k across the 287 of their papers we have counts for
15 papers · 1 filter
Characterization of bipartite states using a single homodyne detector
Virginia D'Auria, Alberto Porzio, Salvatore Solimeno +2
We suggest a scheme to reconstruct the covariance matrix of a two-mode state using a single homodyne detector plus a polarizing beam splitter and a polarization rotator. It can be…
Cloning of observables
Alessandro Ferraro, Matteo Galbiati, Matteo G. A. Paris
We introduce the concept of cloning for classes of observables and classify cloning machines for qubit systems according to the number of parameters needed to describe the class un…
Quantum and classical correlations of intense beams of light via joint photodetection
A. Agliati, M. Bondani, A. Andreoni +2
We address joint photodetection as a method to discriminate between the classical correlations of a thermal beam divided by a beam splitter and the quantum entanglement of a twin-b…
Effect of noise and enhancement of nonlocality in on/off photodetection
Carmen Invernizzi, Stefano Olivares, Matteo G. A. Paris +1
Nonlocality of two-mode states of light is addressed by means of CHSH inequality based on displaced on/off photodetection. Effects due to non-unit quantum efficiency and nonzero da…
Local vs Nonlocal cloning in a noisy environment
A. Ferraro, M. G. A. Paris
We address the distribution of quantum information among many parties in the presence of noise. In particular, we consider how to optimally send to m receivers the information enco…
Squeezed Fock state by inconclusive photon subtraction
Stefano Olivares, Matteo G. A. Paris
We analyze in details the properties of the conditional state recently obtained by J. Wenger, et al. [Phys. Rev. Lett. {\bf 92}, 153601 (2004)] by means of inconclusive photon subt…
Multimode entanglement and telecloning in a noisy environment
A. Ferraro, M. G. A. Paris
We address generation, propagation and application of multipartite continuous variable entanglement in a noisy environment. In particular, we focus our attention on the multimode e…
Gaussian states in continuous variable quantum information
Alessandro Ferraro, Stefano Olivares, Matteo G. A. Paris
These notes originated out of a set of lectures in Quantum Optics and Quantum Information given by one of us (MGAP) at the University of Napoli and the University of Milano. A quit…
Photon subtracted states and enhancement of nonlocality in the presence of noise
Stefano Olivares, Matteo G. A. Paris
We address nonlocality of continuous variable systems in the presence of dissipation and noise. Three nonlocality tests have been considered, based on the measurement of displaced-…
Quantifying decoherence in continuous variable systems
A. Serafini, M. G. A. Paris, F. Illuminati +1
We present a detailed report on the decoherence of quantum states of continuous variable systems under the action of a quantum optical master equation resulting from the interactio…
Experimental reconstruction of photon statistics without photon counting
M. Bondani, G. Zambra, A. Andreoni +5
Experimental reconstructions of photon number distributions of both continuous-wave and pulsed light beams are reported. Our scheme is based on on/off avalanche photodetection assi…
Unitary local invariance
Matteo G A Paris
We address unitary local (UL) invariance of bipartite pure states. Given a bipartite state the complete characterization of the class o…
A two-step MaxLik-MaxEnt strategy to infer photon distribution from on/off measurement at low quantum efficiency
Andrea R. Rossi, Matteo G. A. Paris
A method based on Maximum-Entropy (ME) principle to infer photon distribution from on/off measurements performed with few and low values of quantum efficiency is addressed. The met…
Teleportation of bipartite states using a single entangled pair
Mary M. Cola, Matteo G. A. Paris
A class of quantum protocols to teleport bipartite (entangled) states of two qubits is suggested. Our schemes require a single entangled pair shared by the two parties and the tran…
Optimal quantum repeaters for qubits and qudits
Marco G. Genoni, Matteo G. A. Paris
A class of optimal quantum repeaters for qubits is suggested. The schemes are minimal, i.e. involve a single additional probe qubit, and optimal, i.e. provide the maximum informati…