493 citations · 12.2k across the 287 of their papers we have counts for
16 papers · 2 filters
Two-qubit quantum probes for the temperature of an Ohmic environment
Francesca Gebbia, Claudia Benedetti, Fabio Benatti +3
We address a particular instance where open quantum systems may be used as quantum probes for an emergent property of a complex system, as the temperature of a thermal bath. The in…
Continuous-time quantum walks on planar lattices and the role of the magnetic field
Luca Razzoli, Matteo G. A. Paris, Paolo Bordone
We address the dynamics of continuous-time quantum walk (CTQW) on planar 2D lattice graphs, i.e. those forming a regular tessellation of the Euclidean plane (triangular, square, an…
Quantum-classical dynamical distance and quantumness of quantum walks
Valentina Gualtieri, Claudia Benedetti, Matteo G. A. Paris
We introduce a fidelity-based measure to quantify the differences between the dynamics of classical (CW) and quantum (QW) walks over a graph. We provide u…
Critical Quantum metrology with a finite-component quantum phase transition
Louis Garbe, Matteo Bina, Arne Keller +2
Physical systems close to a quantum phase transition exhibit a divergent susceptibility, suggesting that an arbitrarily-high precision may be achieved by exploiting quantum critica…
Teleportation improvement by non-deterministic noiseless linear amplification
Hamza Adnane, Matteo G A Paris
We address de-Gaussification of continuous variables Gaussian states by optimal non-deterministic noiseless linear amplifier (NLA) and analyze in details the properties of the ampl…
Quantum phase communication channels assisted by non-deterministic noiseless amplifiers
Hamza Adnane, Berihu Teklu, Matteo G. A. Paris
We address quantum -ary phase-shift keyed (PSK) communication channels in the presence of phase diffusion, and analyze the use of probabilistic noiseless linear amplifiers (NLA)…
Experimental investigation of the effect of classical noise on quantum non-Markovian dynamics
Simone Cialdi, Claudia Benedetti, Dario Tamascelli +3
We provide an experimental study of the relationship between the action of different classical noises on the dephasing dynamics of a two-level system and the non-Markovianity of th…
On the discontinuity of the quantum Fisher information for quantum statistical models with parameter dependent rank
Luigi Seveso, Francesco Albarelli, Marco G. Genoni +1
We address the discontinuities of the quantum Fisher information (QFI) that may arise when the parameter of interest takes values that change the rank of the quantum statistical mo…
Quantum Probes for Ohmic Environments at Thermal Equilibrium
Fahimeh Salari Sehdaran, Matteo Bina, Claudia Benedetti +1
It is often the case that the environment of a quantum system may be described as a bath of oscillators with Ohmic density of states. In turn, the precise characterization of these…
Lattice quantum magnetometry
Luca Razzoli, Luca Ghirardi, Ilaria Siloi +2
We put forward the idea of lattice quantum magnetometry, i.e. quantum sensing of magnetic fields by a charged (spinless) particle placed on a finite two-dimensional lattice. In par…
Naimark extension for the single-photon canonical phase measurement
Nicola Dalla Pozza, Matteo G. A. Paris
We address the implementation of the positive operator-valued measure (POVM) describing the optimal M-outcomes discrimination of the polarization state of a single photon. Initiall…
Quantum sensing of curvature
Daniele Bonalda, Luigi Seveso, Matteo G. A. Paris
We address the problem of sensing the curvature of a manifold by performing measurements on a particle constrained to the manifold itself. In particular, we consider situations whe…
Process estimation in qubit systems: a quantum decision theory approach
Ivan Maffeis, Seid Koudia, Abdelhakim Gharbi +1
We address quantum decision theory as a convenient framework to analyze process discrimination and estimation in qubit systems. In particular we discuss the following problems: i)…
Quantum state engineering by non-deterministic noiseless linear amplification
Hamza Adnane, Matteo Bina, Francesco Albarelli +2
We address quantum state engineering of single- and two-mode states by means of non-deterministic noiseless linear amplifiers (NLAs) acting on Gaussian states. In particular, we sh…
Characterizing non-deterministic noiseless linear amplifiers at the quantum limit
Hamza Adnane, Francesco Albarelli, Abdelhakim Gharbi +1
We address the characterization of the gain parameter of a non-deterministic noiseless linear amplifier (NLA) and compare the performances of different estimation strategies using…
Quantum walker as a probe for its coin parameter
Shivani Singh, C. M. Chandrashekar, Matteo G. A. Paris
In discrete-time quantum walk (DTQW) the walker's coin space entangles with the position space after the very first step of the evolution. This phenomenon may be exploited to obtai…