493 citations · 12.2k across the 287 of their papers we have counts for
15 papers · 2 filters
Transport efficiency of continuous-time quantum walks on graphs
Luca Razzoli, Matteo G. A. Paris, Paolo Bordone
Continuous-time quantum walk describes the propagation of a quantum particle (or an excitation) evolving continuously in time on a graph. As such, it provides a natural framework f…
On the quantumness of multiparameter estimation problems for qubit systems
Sholeh Razavian, Matteo G. A. Paris, Marco G. Genoni
The estimation of more than one parameter in quantum mechanics is a fundamental problem with relevant practical applications. In fact, the ultimate limits in the achievable estimat…
Scattering as a quantum metrology problem: a quantum walk approach
Francesco Zatelli, Claudia Benedetti, Matteo G. A. Paris
We address the scattering of a quantum particle by a one-dimensional barrier potential over a set of discrete positions. We formalize the problem as a continuous-time quantum walk…
Discrimination of Ohmic thermal baths by quantum dephasing probes
Alessandro Candeloro, Matteo G. A. Paris
We address the discrimination of structured baths at different temperatures by dephasing quantum probes. We derive the exact reduced dynamics and evaluate the minimum error probabi…
Squeezing as a resource to counteract phase diffusion in optical phase estimation
Giacomo Carrara, Marco G. Genoni, Simone Cialdi +2
We address a phase estimation scheme using Gaussian states in the presence of non-Gaussian phase noise. At variance with previous analysis, we analyze situations in which the noise…
Mechanical oscillator thermometry in the nonlinear optomechanical regime
Victor Montenegro, Marco G. Genoni, Abolfazl Bayat +1
Optomechanical systems are promising platforms for controlled light-matter interactions. They are capable of providing several fundamental and practical novel features when the mec…
Nonclassical steering and the Gaussian steering triangoloids
Massimo Frigerio, Stefano Olivares, Matteo G. A. Paris
Nonclassicality according to the singularity or negativity of the Glauber P-function is a powerful resource in quantum information, with relevant implications in quantum optics. In…
Nonclassical steering with two-mode Gaussian states
Massimo Frigerio, Claudio Destri, Stefano Olivares +1
Singularity or negativity of Glauber P-function is a widespread notion of nonclassicality, with important implications in quantum optics and with the character of an irreducible re…
Continuous-time quantum walks in the presence of a quadratic perturbation
Alessandro Candeloro, Luca Razzoli, Simone Cavazzoni +2
We address the properties of continuous-time quantum walks with Hamiltonians of the form , being the Laplacian matrix of the underlying graph and being t…
Quantum enhanced metrology of Hamiltonian parameters beyond the Cramèr-Rao bound
Luigi Seveso, Matteo G. A. Paris
This is a tutorial aimed at illustrating some recent developments in quantum parameter estimation beyond the Cramèr-Rao bound, as well as their applications in quantum metrology. O…
Quantum probing beyond pure dephasing
Dario Tamascelli, Claudia Benedetti, Heinz-Peter Breuer +1
Quantum probing is the art of exploiting simple quantum systems interacting with a complex environment to extract precise information about some environmental parameters, e.g. the…
Experimental realization of local-to-global noise transition in a two-qubit optical simulator
Claudia Benedetti, Valeria Vento, Stefano Olivares +2
We demonstrate the transition from local to global noise in a two-qubit all-optical quantum simulator subject to classical random fluctuations. Qubits are encoded in the polarizati…
Quantum probes for universal gravity corrections
Alessandro Candeloro, Cristian Degli Esposti Boschi, Matteo G. A. Paris
We address estimation of the minimum length arising from gravitational theories. In particular, we provide bounds on precision and assess the use of quantum probes to enhance the e…
Photonic Realization of a Quantum Finite Automaton
Carlo Mereghetti, Beatrice Palano, Simone Cialdi +3
We describe a physical implementation of a quantum finite automaton recognizing a well known family of periodic languages. The realization exploits the polarization degree of freed…
Tight bound on finite-resolution quantum thermometry at low temperatures
Mathias R. Jørgensen, Patrick P. Potts, Matteo G. A. Paris +1
Precise thermometry is of wide importance in science and technology in general and in quantum systems in particular. Here, we investigate fundamental precision limits for thermomet…