437 citations · 1.2k across the 24 of their papers we have counts for
24 papers
Error convergence of quantum linear system solvers
Matias Ginzburg, Ugo Marzolino
We analyze the performance of the Harrow-Hassidim-Lloyd algorithm (HHL algorithm) for solving linear problems and of a variant of this algorithm (HHL variant) commonly encountered…
Precision magnetometry exploiting excited state quantum phase transitions
Qian Wang, Ugo Marzolino
Critical behaviour in phase transitions is a resource for enhanced precision metrology. The reason is that the function, known as Fisher information, is superextensive at critical…
Quantum thermochemical engines
Ugo Marzolino
Conversion of chemical energy into mechanical work is the fundamental mechanism of several natural phenomena at the nanoscale, like molecular machines and Brownian motors. Quantum…
Locality and entanglement of indistinguishable particles
Till Jonas Frederick Johann, Ugo Marzolino
Entanglement is one of the strongest quantum correlation, and is a key ingredient in fundamental aspects of quantum mechanics and a resource for quantum technologies. While entangl…
Entanglement and non-locality in quantum protocols with identical particles
Fabio Benatti, Roberto Floreanini, Ugo Marzolino
We study the role of entanglement and non-locality in quantum protocols that make use of systems of identical particles. Unlike in the case of distinguishable particles, the notion…
statistical ensemble: systems with fluctuating energy, particle number, and volume
Ugo Marzolino
Within the theory of statistical ensemble, the so-called ensemble describes equilibrium systems that exchange energy, particles, and volume with the surrounding. General, mod…
Entanglement in indistinguishable particle systems
F. Benatti, R. Floreanini, F. Franchini +1
For systems consisting of distinguishable particles, there exists an agreed upon notion of entanglement which is fundamentally based on the possibility of addressing individually e…
Remarks on entanglement and identical particles
F. Benatti, R. Floreanini, F. Franchini +1
We argue that in the case of identical particles the most natural identification of separability, that is of absence of non-classical correlations, is via the factorization of mean…
Fisher information approach to non-equilibrium phase transitions in quantum XXZ spin chain with boundary noise
Ugo Marzolino, Tomaž Prosen
We investigated quantum critical behaviours in the non-equilibrium steady state of a spin chain with boundary Markovian noise using the Fisher information. The latter represe…
Quantum enhanced measurements without entanglement
Daniel Braun, Gerardo Adesso, Fabio Benatti +4
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the sensitivity of measurements of certain physical parameters and have great potential for both fun…
Computational complexity of non-equilibrium steady states of quantum spin chains
Ugo Marzolino, Tomaz Prosen
We study non-equilibrium steady states (NESS) of spin chains with boundary Markovian dissipation from the computational complexity point of view. We focus on XX chains whose NESS a…
Performances and robustness of quantum teleportation with identical particles
Ugo Marzolino, Andreas Buchleitner
When quantum teleportation is performed with truly identical massive particles, indistinguishability allows us to teleport addressable degrees of freedom which do not identify part…
Quantum teleportation with identical particles
Ugo Marzolino, Andreas Buchleitner
We study teleportation with identical massive particles. Indistinguishability imposes that the relevant degrees of freedom to be teleported are not particles, but rather addressabl…
Quantum metrology with non-equilibrium steady states of quantum spin chains
Ugo Marzolino, Tomaž Prosen
We consider parameter estimations with probes being the boundary driven/dissipated non- equilibrium steady states of XXZ spin 1/2 chains. The parameters to be estimated are the dis…
Entanglement in dissipative dynamics of identical particles
Ugo Marzolino
Entanglement of identical massive particles recently gained attention, because of its relevance in highly controllable systems, e.g. ultracold gases. It accounts for correlations a…
Precision Measurements of Temperature and Chemical Potential of Quantum Gases
Ugo Marzolino, Daniel Braun
We investigate the sensitivity with which the temperature and the chemical potential characterizing quantum gases can be measured. We calculate the corresponding quantum Fisher inf…
Entangled identical particles and noise
Giuseppe Argentieri, Fabio Benatti, Roberto Floreanini +1
For systems of identical Bosons, it is necessary to reformulate the notions of separability and entanglement in algebraic terms shifting the emphasis from the particle aspect of fi…
Squeezing Inequalities and Entanglement for Identical Particles
F. Benatti, R. Floreanini, U. Marzolino
By identifying non-local effects in systems of identical Bosonic qubits through correlations of their commuting observables, we show that entanglement is not necessary to violate c…
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…
Sub-shot-noise quantum metrology with entangled identical particles
F. Benatti, R. Floreanini, U. Marzolino
The usual notion of separability has to be reconsidered when applied to states describing identical particles. A definition of separability not related to any a priori Hilbert spac…
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…
Statistical mechanics of multipartite entanglement
Paolo Facchi, Giuseppe Florio, Ugo Marzolino +2
We characterize the multipartite entanglement of a system of n qubits in terms of the distribution function of the bipartite purity over all balanced bipartitions. We search for th…
Phase transitions of bipartite entanglement
P. Facchi, U. Marzolino, G. Parisi +2
We study a random matrix model for the statistical properties of the purity of a bipartite quantum system at a finite (fictitious) temperature. This enables us to write the generat…