Journal
PHYSICAL REVIEW A
Volume 88, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.88.022118
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Funding
- Brazilian program Science without Borders
- Fapemig
- Capes
- CNPq
- INCT-IQ
- Spanish Project [FIS2011-29400]
- EU [Marie-Curie CIG 293933/ENFOQI]
- Austrian Science Fund (FWF) [Y376-N16]
- BMBF (CHIST-ERA network QUASAR)
- John Templeton Foundation
- Swiss National Science Foundation
- Austrian Science Fund (FWF) [W1210] Funding Source: Austrian Science Fund (FWF)
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The problem of separating classical from quantum correlations is, in general, intractable and has been solved explicitly only in a few cases. In particular, known methods cannot provide general solutions for an arbitrary number of settings. We provide the complete characterization of the classical correlations and the corresponding maximal quantum violations for the case of n >= 4 observables X-0, ... , Xn-1, where each consecutive pair {X-i, Xi+1}, sum mod n, is jointly measurable. This generalizes both the Clauser-Horne-Shimony-Holt and the Klyachko-Can-Binicioglu-Shumovsky scenarios, which are the simplest ones for locality and noncontextuality, respectively. In addition, we provide explicit quantum states and settings with maximal quantum violation and minimal quantum dimension.
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