58 citations · 225 across the 16 of their papers we have counts for
17 papers · 1 filter
Bell's go theorem: regaining local causality with a new notion of realism
Lorenzo Catani, Nesta van der Schaaf, Rui Soares Barbosa
Bell's theorem is popularly stated as the inconsistency of quantum theory with local realism. Realism is here formalized by the ontological models framework, where elements of real…
First-Click Time Measurements
Mafalda Pinto Couto, Lorenzo Maccone, Lorenzo Catani +1
There are two distinct perspectives on the quantum time-of-arrival: one can ask for the probability that a particle is found at the detector at a given time, regardless of whether…
Experimental investigation of nonclassicality in the simplest scenario via the degrees of freedom of light
João M. M. Gama, Guilherme T. C. Cruz, Massy Khoshbin +3
In this work, we experimentally investigate the classical-light emulation of different notions of nonclassicality in the simplest scenario. We implement this prepare-and-measure sc…
An extended Wigner's friend no-go theorem inspired by generalized contextuality
Laurens Walleghem, Lorenzo Catani
The renowned Local Friendliness no-go theorem demonstrates the incompatibility of quantum theory with the combined assumptions of Absoluteness of Observed Events - the idea that ob…
Resource-theoretic hierarchy of contextuality for general probabilistic theories
Lorenzo Catani, Thomas D. Galley, Tomáš Gonda
In this work we present a hierarchy of generalized contextuality. It refines the traditional binary distinction between contextual and noncontextual theories, and facilitates their…
Alternative robust ways of witnessing nonclassicality in the simplest scenario
Massy Khoshbin, Lorenzo Catani, Matthew Leifer
In this paper we relate notions of nonclassicality in the simplest nontrivial scenario (a prepare and measure scenario composed of four preparations and two binary-outcome tomograp…
Aspects of the phenomenology of interference that are genuinely nonclassical
Lorenzo Catani, Matthew Leifer, Giovanni Scala +2
Interference phenomena are often claimed to resist classical explanation. However, such claims are undermined by the fact that the specific aspects of the phenomenology upon which…
Connecting XOR and XOR* games
Lorenzo Catani, Ricardo Faleiro, Pierre-Emmanuel Emeriau +2
In this work we focus on two classes of games: XOR nonlocal games and XOR* sequential games with monopartite resources. XOR games have been widely studied in the literature of nonl…
Reply to "Comment on 'Why interference phenomena do not capture the essence of quantum theory' "
Lorenzo Catani, Matthew Leifer, David Schmid +1
Our article [arXiv:2111.13727(2021)] argues that the phenomenology of interference that is traditionally regarded as problematic does not, in fact, capture the essence of quantum t…
What is nonclassical about uncertainty relations?
Lorenzo Catani, Matthew Leifer, Giovanni Scala +2
Uncertainty relations express limits on the extent to which the outcomes of distinct measurements on a single state can be made jointly predictable. The existence of nontrivial unc…
Why interference phenomena do not capture the essence of quantum theory
Lorenzo Catani, Matthew Leifer, David Schmid +1
Quantum interference phenomena are widely viewed as posing a challenge to the classical worldview. Feynman even went so far as to proclaim that they are the only mystery and the ba…
Relating compatibility and divisibility of quantum channels
Cristhiano Duarte, Lorenzo Catani, Raphael C. Drumond
We connect two key concepts in quantum information: compatibility and divisibility of quantum channels. Two channels are compatible if they can be both obtained via marginalization…
Relationship between covariance of Wigner functions and transformation noncontextuality
Lorenzo Catani
We investigate the relationship between two properties of quantum transformations often studied in popular subtheories of quantum theory: covariance of the Wigner representation of…
A mathematical framework for operational fine tunings
Lorenzo Catani, Matthew Leifer
In the framework of ontological models, the inherently nonclassical features of quantum theory always seem to involve properties that are fine tuned, i.e. properties that hold at t…
Tsirelson's bound and Landauer's principle in a single-system game
Luciana Henaut, Lorenzo Catani, Dan E. Browne +2
We introduce a simple single-system game inspired by the Clauser-Horne-Shimony-Holt (CHSH) game. For qubit systems subjected to unitary gates and projective measurements, we prove…
State-injection schemes of quantum computation in Spekkens' toy theory
Lorenzo Catani, Dan E. Browne
Spekkens' toy theory is a non-contextual hidden variable model with an epistemic restriction, a constraint on what the observer can know about the reality. It has been shown in [3]…
Spekkens' toy model in all dimensions and its relationship with stabilizer quantum mechanics
Lorenzo Catani, Dan E. Browne
Spekkens' toy model is a non-contextual hidden variable model with an epistemic restriction, a constraint on what an observer can know about reality. The aim of the model, develope…