Joint System Quantum Descriptions Arising from Local Quantumness

Tom Cooney, Marius Junge, Miguel Navascués, David Pérez-García, Ignacio Villanueva

Research output: Contribution to journalArticlepeer-review


Bipartite correlations generated by non-signalling physical systems that admit a finite-dimensional local quantum description cannot exceed the quantum limits, i.e., they can always be interpreted as distant measurements of a bipartite quantum state. Here we consider the effect of dropping the assumption of finite dimensionality. Remarkably, we find that the same result holds provided that we relax the tensor structure of space-like separated measurements to mere commutativity. We argue why an extension of this result to tensor representations seems unlikely.

Original languageEnglish (US)
Pages (from-to)501-513
Number of pages13
JournalCommunications in Mathematical Physics
Issue number2
StatePublished - Sep 2013

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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