3 papers
quant-ph2026
GPU-accelerated semidefinite programming for causal games
Emanuel-Cristian Boghiu, Kyrylo Simonov
The process matrix formalism describes quantum correlations in scenarios without a fixed causal order between local laboratories. Operational signatures of such correlations can be…
quant-ph2025
Paradox-free classical non-causality and unambiguous non-locality without entanglement are equivalent
Hippolyte Dourdent, Kyrylo Simonov, Andreas Leitherer +5
Closed timelike curves (CTCs) challenge our conception of causality by allowing information to loop back into its own past. Any consistent description of such scenarios must avoid…
quant-ph2024
Escaping the Shadow of Bell's Theorem in Network Nonlocality
Maria Ciudad Alañón, Emanuel-Cristian Boghiu, Paolo Abiuso +1
The possibility of nonclassicality in networks unrelated to Bell's original eponymous theorem has recently attracted significant interest. Here, we identify a sufficient condition…