98 citations · 530 across the 24 of their papers we have counts for
24 papers
Neural Network Learning of One-Bit Protocols for Qubit Measurement Simulation
Josep Escrig, Mani Zartab, Giulio Gasbarri +3
Communication complexity provides a natural framework for quantifying the classical resources required to reproduce quantum statistics. In the qubit prepare-and-measure scenario, t…
Single-letter Chain Rule for Quantum Relative Entropy
Giulio Gasbarri, Matt Hoogsteder-Riera
Relative entropy is the standard measure of distinguishability in classical and quantum information theory. In the classical case, its loss under channels admits an exact chain rul…
Prepare-and-measure and entanglement simulation beyond qubits
Mani Zartab, Giulio Gasbarri, Gael Sentís +1
For two non-communicating parties, quantum theory can give rise to probability distributions of outcomes that no local classical model can reproduce without communication. However,…
Nanoparticle Interferometer by Throw and Catch
Jakub Wardak, Tiberius Georgescu, Giulio Gasbarri +2
Matter-wave interferometry with increasingly larger masses could pave the way to understanding the nature of wavefunction collapse, the quantum to classical transition or even how…
Linear-response approach to critical quantum many-body systems
Ricardo Puebla, Alessio Belenchia, Giulio Gasbarri +2
The characterization of quantum critical phenomena is pivotal for the understanding and harnessing of quantum many-body physics. However, their complexity makes the inference of su…
Quantum Physics in Space
Alessio Belenchia, Matteo Carlesso, Ömer Bayraktar +17
Advances in quantum technologies are giving rise to a revolution in the way fundamental physics questions are explored at the empirical level. At the same time, they are the seeds…
Testing the foundations of quantum physics in space Interferometric and non-interferometric tests with Large Particles
Giulio Gasbarri, Alessio Belenchia, Matteo Carlesso +5
Quantum technologies are opening novel avenues for applied and fundamental science at an impressive pace. In this perspective article, we focus on the promises coming from the comb…
Gravitational decoherence: a non relativistic spin 1/2 fermionic model
Lorenzo Asprea, Giulio Gasbarri
In a previous work [arXiv1905.01121] we have derived a quantum master equation for the dynamics of a scalar bosonic particle interacting with a weak, stochastic and classical gravi…
Mass-coupled relativistic spontaneous collapse models
Caitlin Jones, Giulio Gasbarri, Angelo Bassi
Currently there is not a satisfactory relativistic spontaneous collapse model. Here we show the impossibility of a simple generalization of the continuous spontaneous collapse (CSL…
Prospects for near-field interferometric tests of Collapse Models
Giulio Gasbarri, Alessio Belenchia, Mauro Paternostro +1
Near-field interferometry with large dielectric nano-particles opens the way to test fundamental modification of standard quantum mechanics at an unprecedented level. We showcase t…
Testing Dissipative Collapse Models with a Levitated Micromagnet
A. Vinante, G. Gasbarri, C. Timberlake +2
We present experimental tests of dissipative extensions of spontaneous wave function collapse models based on a levitated micromagnet with ultralow dissipation. The spherical micro…
Zel'dovich amplification in a superconducting circuit
Maria Chiara Braidotti, Andrea Vinante, Giulio Gasbarri +2
Zel'dovich proposed that electromagnetic (EM) waves with angular momentum reflected from a rotating metallic, lossy cylinder will be amplified. However, we are still lacking a dire…
On the decoherence effect of a stochastic gravitational perturbation on scalar matter and the possibility of its interferometric detection
Lorenzo Asprea, Angelo Bassi, Hendrik Ulbricht +1
We present a general master equation for the quantum dynamics of a scalar bosonic particle interacting with an external weak and stochastic gravitational field. The dynamics predic…
Ultralow mechanical damping with Meissner-levitated ferromagnetic microparticles
A. Vinante, P. Falferi, G. Gasbarri +3
Levitated nanoparticles and microparticles are excellent candidates for the realization of extremely isolated mechanical systems, with a huge potential impact in sensing applicatio…
Acceleration sensing with magnetically levitated oscillators above a superconductor
Chris Timberlake, Giulio Gasbarri, Andrea Vinante +2
We experimentally demonstrate stable trapping of a permanent magnet sphere above a lead superconductor, in vacuum pressures of ~mbar. The levitating magnet behave…
Talbot--Lau effect beyond the point-particle approximation
Alessio Belenchia, Giulio Gasbarri, Rainer Kaltenbaek +2
Recent progress in matter-wave interferometry aims to directly probe the quantum properties of matter on ever increasing scales. However, in order to perform interferometric experi…
Gravitational decoherence: a general non relativistic model
Lorenzo Asprea, Giulio Gasbarri, Angelo Bassi
We derive a general quantum master equation for the dynamics of a scalar bosonic particle interacting with a weak, stochastic and classical external gravitational field. The dynami…
The inverse Born problem in contextual probability theories: quantum spin and continuous random variables
Stefano Bacchi, Luca Curcuraci, Giulio Gasbarri
We revise contextual probability theory and the associated inverse Born problem, solved by the Quantum-Like Representation Algorithm (QLRA) in case of two discrete random variables…
Stochastic unravellings of non-Markovian completely positive and trace preserving maps
Giulio Gasbarri, Luca Ferialdi
We consider open quantum systems with factorized initial states, providing the structure of the reduced system dynamics, in terms of environment cumulants. We show that such comple…
Recursive approach for non-Markovian time-convolutionless master equations
Giulio Gasbarri, Luca Ferialdi
We consider a general open system dynamics and we provide a recursive method to derive the associated non-Markovian master equation in a perturbative series. The approach relies on…
General Galilei Covariant Gaussian Maps
Giulio Gasbarri, Marko Toroš, Angelo Bassi
We characterize general non-Markovian Gaussian maps which are covariant under Galilean transformations. In particular, we characterize translational and Galilean covariant maps and…
Gravity induced wave function collapse
Giulio Gasbarri, Marko Toroš, Sandro Donadi +1
Starting from an idea of S.L. Adler~\cite{Adler2015}, we develop a novel model of gravity-induced spontaneous wave-function collapse. The collapse is driven by complex stochastic f…
Colored and Dissipative Continuous Spontaneous Localization model and Bounds from Matter-Wave Interferometry
Marko Toroš, Giulio Gasbarri, Angelo Bassi
Matter-wave interferometry is a direct test of the quantum superposition principle for massive systems, and of collapse models. Here we show that the bounds placed by matter-wave i…
Coherent scattering in non-relativistic quantum mechanics
G. Gasbarri, S. Donadi, A. Bassi
We show under which conditions a particle scatters coherently on a multi-particles system, working in the non relativistic framework. In a nutshell, in order to have coherent scatt…