期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.050504
关键词
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资金
- Simons Foundation
- EPSRC [EP/N018745/1]
- Fondation Sciences Mathematiques de Paris [eotpFIELD15RPOMT-FSMP1]
- Oxford Martin School James Martin Program on Bio-inspired Quantum Technologies
- FCT, Fundacao para a Ciencia e Tecnologia (Portuguese Foundation for Science and Technology) [SFRH/BD/94945/2013]
- EPSRC [EP/N018745/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/N018745/1] Funding Source: researchfish
- Fundação para a Ciência e a Tecnologia [SFRH/BD/94945/2013] Funding Source: FCT
We consider the contextual fraction as a quantitative measure of contextuality of empirical models, i.e., tables of probabilities of measurement outcomes in an experimental scenario. It provides a general way to compare the degree of contextuality across measurement scenarios; it bears a precise relationship to violations of Bell inequalities; its value, and a witnessing inequality, can be computed using linear programing; it is monotonic with respect to the free operations of a resource theory for contextuality; and it measures quantifiable advantages in informatic tasks, such as games and a form of measurement-based quantum computing.
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