A generalized no-broadcasting theorem

Abstract

We prove a generalized version of the no-broadcasting theorem, applicable to essentially \emph{any} nonclassical finite-dimensional probabilistic model satisfying a no-signaling criterion, including ones with ``super-quantum'' correlations. A strengthened version of the quantum no-broadcasting theorem follows, and its proof is significantly simpler than existing proofs of the no-broadcasting theorem.

4 pages

References in corpus (5)

• Noncommuting mixed states cannot be broadcast
• Non-local correlations as an information theoretic resource
• A limit on nonlocality in any world in which communication complexity is not trivial
• Characterizing quantum theory in terms of information-theoretic constraints
• Superbroadcasting of mixed states

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