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quant-ph2025
Disentangling signalling and causal influence
Kathleen Barsse, Paolo Perinotti, Alessandro Tosini +1
The causal effects activated by a quantum interaction are studied, modelling the last one as a bipartite unitary channel. The two parties, say Alice and Bob, can use the channel to…
quant-ph2023
Causal influence versus signalling for interacting quantum channels
Kathleen Barsse, Paolo Perinotti, Alessandro Tosini +1
A causal relation between quantum agents, say Alice and Bob, is necessarily mediated by an interaction. Modelling the last one as a reversible quantum channel, an intervention of A…
quant-ph2023
Which entropy for general physical theories?
Paolo Perinotti, Alessandro Tosini, Leonardo Vaglini
We address the problem of quantifying the information content of a source for an arbitrary information theory, where the information content is defined in terms of the asymptotic a…