17 citations · 32 across the 2 of their papers we have counts for
5 papers
Non-locality, contextuality and valuation algebras: a general theory of disagreement
Samson Abramsky, Giovanni Carù
We establish a strong link between two apparently unrelated topics: the study of conflicting information in the formal framework of valuation algebras, and the phenomena of non-loc…
Towards a complete cohomology invariant for non-locality and contextuality
Giovanni Carù
The sheaf theoretic description of non-locality and contextuality by Abramsky and Brandenburger sets the ground for a topological study of these peculiar features of quantum mechan…
Minimum quantum resources for strong non-locality
Samson Abramsky, Rui Soares Barbosa, Giovanni Carù +3
We analyse the minimum quantum resources needed to realise strong non-locality, as exemplified e.g. by the classical GHZ construction. It was already known that no two-qubit system…
A complete characterisation of All-versus-Nothing arguments for stabiliser states
Samson Abramsky, Rui Soares Barbosa, Giovanni Carù +1
An important class of contextuality arguments in quantum foundations are the All-versus-Nothing (AvN) proofs, generalising a construction originally due to Mermin. We present a gen…
On the Cohomology of Contextuality
Giovanni Carù
Recent work by Abramsky and Brandenburger used sheaf theory to give a mathematical formulation of non-locality and contextuality. By adopting this viewpoint, it has been possible t…