title: Generalized no-broadcasting theorem.
abstract: We prove a generalized version of the no-broadcasting theorem, applicable to essentially any nonclassical finite-dimensional probabilistic model satisfying a no-signaling criterion, including ones with "superquantum" 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.
authors.affiliation: CCS-3: Information Sciences, MS B256, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. barnum@lanl.gov
authors.forename: Howard
authors.initials: H
authors.lastname: Barnum
authors.forename: Jonathan
authors.initials: J
authors.lastname: Barrett
authors.forename: Matthew
authors.initials: M
authors.lastname: Leifer
authors.forename: Alexander
authors.initials: A
authors.lastname: Wilce