493 citations · 12.2k across the 287 of their papers we have counts for
10 papers · 2 filters
Quantum probes for the spectral properties of a classical environment
Claudia Benedetti, Fabrizio Buscemi, Paolo Bordone +1
We address the use of simple quantum probes for the spectral characterization of classical noisy environments. In our scheme a qubit interacts with a classical stochastic field des…
Exact and approximate solutions for the quantum minimum-Kullback-entropy estimation problem
Carlo Sparaciari, Stefano Olivares, Francesco Ticozzi +1
The minimum Kullback entropy principle (mKE) is a useful tool to estimate quantum states and operations from incomplete data and prior information. In general, the solution of a mK…
Drawbacks of the use of fidelity to assess quantum resources
Matteo Bina, Antonio Mandarino, Stefano Olivares +1
Fidelity is a figure of merit widely employed in quantum technology in order to quantify similarity between quantum states and, in turn, to assess quantum resources or reconstructi…
Non-Markovianity of colored noisy channels
C. Benedetti, M. G. A. Paris, S. Maniscalco
We address the non-Markovian character of quantum maps describing the interaction of a qubit with a random classical field. In particular, we evaluate trace- and capacity-based non…
Detecting quantum non-Gaussianity of noisy Schrödinger cat states
Mattia L. Palma, Jimmy Stammers, Marco G. Genoni +4
Highly quantum non-linear interactions between different bosonic modes lead to the generation of quantum non-Gaussian states, i.e. states that cannot be written as mixtures of Gaus…
Time-evolution of entanglement and quantum discord of bipartite systems subject to 1/f^α noise
Claudia Benedetti, Matteo G. A. Paris, Fabrizio Buscemi +1
We study the dynamics of quantum correlations for two non interacting qubits initially prepared in a maximally entangled state and then coupled with an external environment charact…
Experimental estimation of quantum discord for polarization qubit and the use of fidelity to assess quantum correlations
Claudia Benedetti, Alexander P. Shurupov, Matteo G. A. Paris +2
We address the experimental determination of entropic quantum discord for systems made of a pair of polarization qubits. We compare results from full and partial tomography and fou…
Homodyne detection as a near-optimum receiver for phase-shift keyed binary communication in the presence of phase diffusion
Stefano Olivares, Simone Cialdi, Fabrizio Castelli +1
We address binary optical communication channels based on phase-shift keyed coherent signals in the presence of phase diffusion. We prove theoretically and demonstrate experimental…
Detecting quantum non-Gaussianity via the Wigner function
Marco G. Genoni, Mattia L. Palma, Tommaso Tufarelli +3
We introduce a family of criteria to detect quantum non-Gaussian states of a harmonic oscillator, that is, quantum states that can not be expressed as a convex mixture of Gaussian…
Quantum probes to assess correlations in a composite system
Andrea Smirne, Simone Cialdi, Giorgio Anelli +2
We suggest and demonstrate experimentally a strategy to obtain relevant information about a composite system by only performing measurements on a small and easily accessible part o…