No-broadcasting of non-signalling boxes via operations which transform local boxes into local ones
No-broadcasting of non-signalling boxes via operations which transform local boxes into local ones
We deal with families of probability distributions satisfying non-signalling condition, called non-signalling boxes and consider a class of operations that transform local boxes into local ones (the one that admit LHV model). We prove that any operation from this class cannot broadcast a bipartite non-local box with 2 binary inputs …