113 citations · 728 across the 25 of their papers we have counts for
25 papers
Amperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material
Gian Marcello Andolina, Antonella De Pasquale, Francesco Maria Dimitri Pellegrino +3
Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-electron interactions (EEEIs) mediated by a transverse gauge field. Originally introd…
Geometrical bounds on irreversibility in open quantum systems
Luca Mancino, Vasco Cavina, Antonella De Pasquale +6
Clausius inequality has deep implications for reversibility and the arrow of time. Quantum theory is able to extend this result for closed systems by inspecting the trajectory of t…
Versatile Gaussian probes for squeezing estimation
Luca Rigovacca, Alessandro Farace, Leonardo A. M. Souza +3
We consider an instance of black-box quantum metrology in the Gaussian framework, where we aim to estimate the amount of squeezing applied on an input probe, without previous knowl…
Estimating Temperature via Sequential Measurements
Antonella De Pasquale, Kazuya Yuasa, Vittorio Giovannetti
We study the efficiency of estimation procedures where the temperature of an external bath is indirectly recovered by monitoring the transformations induced on a probing system tha…
Universal locality of quantum thermal susceptibility
Giacomo De Palma, Antonella De Pasquale, Vittorio Giovannetti
The ultimate precision of any measurement of the temperature of a quantum system is the inverse of the local quantum thermal susceptibility [De Pasquale et al., Nature Communicatio…
Cut-and-paste restoration of entanglement transmission
Alvaro Cuevas, Andrea Mari, Antonella De Pasquale +5
The distribution of entangled quantum systems among two or more nodes of a network is a key task at the basis of quantum communication, quantum computation and quantum cryptography…
Building versatile bipartite probes for quantum metrology
Alessandro Farace, Antonella De Pasquale, Gerardo Adesso +1
We consider bipartite systems as versatile probes for the estimation of transformations acting locally on one of the subsystems. We investigate what resources are required for the…
Gaussian Discriminating Strength
Luca Rigovacca, Alessandro Farace, Antonella De Pasquale +1
We present a quantifier of non-classical correlations for bipartite, multi-mode Gaussian states. It is derived from the Discriminating Strength measure, introduced for finite dimen…
Local quantum thermal susceptibility
Antonella De Pasquale, Davide Rossini, Rosario Fazio +1
Thermodynamics relies on the possibility to describe systems composed of a large number of constituents in terms of few macroscopic variables. Its foundations are rooted into the p…
Two-Mode Bosonic Quantum Metrology with Number Fluctuations
Antonella De Pasquale, Paolo Facchi, Giuseppe Florio +3
We search for the optimal quantum pure states of identical bosonic particles for applications in quantum metrology, in particular in the estimation of a single parameter for the ge…
Discriminating Strength: a bona fide measure of non-classical correlations
A. Farace, A. De Pasquale, L. Rigovacca +1
A new measure of non-classical correlations is introduced and characterized. It tests the ability of using a state ρ of a composite system AB as a probe for a quantum illumination…
An experimental proposal for a Gaussian amendable quantum channel
Daniela Buono, Gaetano Nocerino, Alberto Porzio +3
We propose a quantum optics experiment where a single two-mode Gaussian entangled state is used for realizing the paradigm of an amendable Gaussian channel recently presented in Ph…
Quantum parameter estimation affected by unitary disturbance
A. De Pasquale, D. Rossini, P. Facchi +1
We provide a general framework for handling the effects of a unitary disturbance on the estimation of the amplitude associated to a unitary dynamics. By computing an analytical…
Amendable Gaussian channels:restoring entanglement via a unitary filter
A. De Pasquale, A. Mari, A. Porzio +1
We show that there exist Gaussian channels which are amendable. A channel is amendable if when applied twice is entanglement breaking while there exists a unitary filter such that,…
Quantifying the noise of a quantum channel by noise addition
Antonella De Pasquale, Vittorio Giovannetti
In this paper we introduce a way to quantify the noise level associated to a given quantum transformation. The key mechanism lying at the heart of the proposal is "noise addition":…
Invariant measures on multimode quantum Gaussian states
C. Lupo, S. Mancini, A. De Pasquale +3
We derive the invariant measure on the manifold of multimode quantum Gaussian states, induced by the Haar measure on the group of Gaussian unitary transformations. To this end, by…
Entanglement-assisted tomography of a quantum target
A. De Pasquale, P. Facchi, V. Giovannetti +1
We study the efficiency of quantum tomographic reconstruction where the system under investigation (quantum target) is indirectly monitored by looking at the state of a quantum pro…
Statistical distribution of the local purity in a large quantum system
A. De Pasquale, P. Facchi, V. Giovannetti +3
The local purity of large many-body quantum systems can be studied by following a statistical mechanical approach based on a random matrix model. Restricting the analysis to the ca…
Reconstruction of time-dependent coefficients: a check of approximation schemes for non-Markovian convolutionless dissipative generators
Bruno Bellomo, Antonella De Pasquale, Giulia Gualdi +1
We propose a procedure to fully reconstruct the time-dependent coefficients of convolutionless non-Markovian dissipative generators via a finite number of experimental measurements…
A tomographic approach to non-Markovian master equations
Bruno Bellomo, Antonella De Pasquale, Giulia Gualdi +1
We propose a procedure based on symplectic tomography for reconstructing the unknown parameters of a convolutionless non-Markovian Gaussian noisy evolution. Whenever the time-depen…
Phase transitions and metastability in the distribution of the bipartite entanglement of a large quantum system
A. De Pasquale, P. Facchi, G. Parisi +2
We study the distribution of the Schmidt coefficients of the reduced density matrix of a quantum system in a pure state. By applying general methods of statistical mechanics, we in…
Reconstruction of Markovian Master Equation parameters through symplectic tomography
Bruno Bellomo, Antonella De Pasquale, Giulia Gualdi +1
In open quantum systems, phenomenological master equations with unknown parameters are often introduced. Here we propose a time-independent procedure based on quantum tomography to…
State Tomography of a Qubit through Scattering of a Probe Qubit
Antonella De Pasquale, Kazuya Yuasa, Hiromichi Nakazato
We discuss the state tomography of a fixed qubit (a spin-1/2 target particle), which is in general in a mixed state, through 1D scattering of a probe qubit off the target. Two stra…
XY model on the circle: diagonalization, spectrum, and forerunners of the quantum phase transition
A. De Pasquale, P. Facchi
We exactly diagonalize the finite-size XY model with periodic boundary conditions and analytically determine the ground state energy. We show that there are two types of fermions:…