A histories perspective on characterizing quantum non-locality

Fay Dowker, Joe Henson, Petros Wallden

Research output: Contribution to journalArticlepeer-review

Abstract

We introduce a framework for studying non-locality and contextuality inspired
by the path integral formulation of quantum theory. We prove that the existence
of a strongly positive joint quantum measure— the quantum analogue of a joint
probability measure — on a set of experimental probabilities implies the Navas-
cues–Pironio–Acin (NPA) condition Q1and is implied by the stronger NPA condition Q1+AB. A related condition is shown to be equivalent to Q1+AB1.
Original languageEnglish
Number of pages29
JournalNew Journal of Physics
Volume16
DOIs
Publication statusPublished - Mar 2014

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