493 citations · 12.2k across the 287 of their papers we have counts for
15 papers · 2 filters
Estimation of general Hamiltonian parameters via controlled energy measurements
Luigi Seveso, Matteo G. A. Paris
The quantum Cramér-Rao theorem states that the quantum Fisher information (QFI) bounds the best achievable precision in the estimation of a quantum parameter . This is true, how…
Continuous-variable quantum probes for structured environments
Matteo Bina, Federico Grasselli, Matteo G. A. Paris
We address parameter estimation for complex/structured systems and suggest an effective estimation scheme based on continuous-variables quantum probes. In particular, we investigat…
Detection of squeezing by on-chip glass-integrated homodyne analyzer
Carmen Porto, Davide Rusca, Simone Cialdi +5
We design and demonstrate on-chip homodyne detection operating in the quantum regime, i.e. able to detect genuine nonclassical features. Our setup exploits a glass-integrated homod…
Quantum metrology at level anti-crossing
Luca Ghirardi, Ilaria Siloi, Paolo Bordone +2
We address parameter estimation in two-level systems exhibiting level anti-crossing and prove that universally optimal strategies for parameter estimation may be designed, that is,…
Universal quantum magnetometry with spin states at equilibrium
Filippo Troiani, Matteo G. A. Paris
We address metrological protocols for the estimation of the intensity and the orientation of a magnetic field, and show that quantum-enhanced precision may be achieved by probing t…
Squeezing-enhanced phase-shift-keyed binary communication in noisy channels
Giovanni Chesi, Stefano Olivares, Matteo G. A. Paris
We address binary phase-shift-keyed communication channels based on Gaussian states and prove that squeezing improves state discrimination at fixed energy of the channel, also in t…
Quantum probes for the cutoff frequency of Ohmic environments
Claudia Benedetti, Fahimeh Salari Sehdaran, Mohammad H. Zandi +1
Quantum probing consists of suitably exploiting a simple, small, and controllable quantum system to characterize a larger and more complex system. Here, we address the estimation o…
Noisy propagation of coherent states in a lossy Kerr medium
Ludwig Kunz, Matteo G. A. Paris, Konrad Banaszek
We identify and discuss nonlinear phase noise arising in Kerr self-phase modulation of a coherent light pulse propagating through an attenuating medium with third-order nonlinearit…
Hybrid quantum key distribution using coherent states and photon-number-resolving detectors
Marco Cattaneo, Matteo G. A. Paris, Stefano Olivares
We put forward a hybrid quantum key distribution protocol based on coherent states, Gaussian modulation, and photon-number-resolving (PNR) detectors, and show that it may enhance t…
Continuous-time quantum walk on spatially correlated noisy lattices
Matteo A. C. Rossi, Claudia Benedetti, Massimo Borrelli +2
We address memory effects and diffusive properties of a continuous-time quantum walk on a one-dimensional percolation lattice affected by spatially correlated random telegraph nois…
Ultimate limits for quantum magnetometry via time-continuous measurements
Francesco Albarelli, Matteo A. C. Rossi, Matteo G. A. Paris +1
We address the estimation of the magnetic field B acting on an ensemble of atoms with total spin J subjected to collective transverse noise. By preparing an initial spin coherent s…
Non-Markovianity by undersampling in quantum optical simulators
Matteo A. C. Rossi, Claudia Benedetti, Simone Cialdi +4
We unveil a novel source of non-Markovianity for the dynamics of quantum systems, which appears when the system does not explore the full set of dynamical trajectories in the inter…
Generation of Coherence via Gaussian Measurements
Francesco Albarelli, Marco G. Genoni, Matteo G. A. Paris
We address measurement-based generation of quantum coherence in continuous variable systems. We consider Gaussian measurements performed on Gaussian states and focus on two scenari…
An effective iterative method to build the Naimark extension of rank-n POVMs
Nicola Dalla Pozza, Matteo G. A. Paris
We revisit the problem of finding the Naimark extension of a probability operator-valued measure (POVM), i.e. its implementation as a projective measurement in a larger Hilbert spa…
Effective description of the short-time dynamics in open quantum systems
Matteo A. C. Rossi, Caterina Foti, Alessandro Cuccoli +3
We address the dynamics of a bosonic system coupled to either a bosonic or a magnetic environment, and derive a set of sufficient conditions that allow one to describe the dynamics…