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Contextual fraction as a measure of contextuality

Abstract:

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 programming; it is monotone with respect to the “free” operations of a resource the...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.119.050504

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Institution:
University of Oxford
Oxford college:
Wolfson College
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Computer Science
Role:
Author
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Funding agency for:
Abramsky, S
Grant:
James Martin Program on Bio-inspired Quantum Technologies
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Funding agency for:
Abramsky, S
Grant:
James Martin Program on Bio-inspired Quantum Technologies
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Funding agency for:
Barbosa, R
Grant:
SFRH/BD/94945/2013
More from this funder
Funding agency for:
Barbosa, R
Grant:
SFRH/BD/94945/2013
More from this funder
Funding agency for:
Barbosa, R
Grant:
SFRH/BD/94945/2013
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Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
119
Issue:
5
Article number:
050504
Publication date:
2017-08-04
Acceptance date:
2017-06-15
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
710349
Pubs id:
pubs:710349
UUID:
uuid:329526f0-6a5c-46dc-9417-4cd83d03c14e
Local pid:
pubs:710349
Deposit date:
2017-08-03

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