2 papers
quant-ph2025
Every non-signalling channel is common-cause realizable
Paulo J. Cavalcanti, John H. Selby, Ana Belén Sainz
In this work we show that the set of non-signalling resources of a locally-tomographic generalised probabilistic theory (GPT), such as quantum and classical theory, coincides with…
quant-ph2024
A hierarchy of semidefinite programs for generalised Einstein-Podolsky-Rosen scenarios
Matty J. Hoban, Tom Drescher, Ana Belén Sainz
Correlations in Einstein-Podolsky-Rosen (EPR) scenarios, captured by \textit{assemblages} of unnormalised quantum states, have recently caught the attention of the community, both…