Abstract
We investigate the conditions under which a set of multipartite nonlocal correlations can describe the distributions achievable by distant parties conducting experiments in a consistent universe. Several questions are posed, such as: are all such sets 'nested', i.e., contained into one another? Are they discrete or do they form a continuum? How many of them are supraquantum? Are there non-trivial polytopes among them? We answer some of these questions or relate them to established conjectures in complexity theory by introducing a 'zoo' of physically consistent sets, which can be characterized efficiently via either linear or semidefinite programming. As a bonus, we use the zoo to derive, for the first time, concrete impossibility results in nonlocality distillation.
Original language | English |
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Article number | 424029 |
Number of pages | 21 |
Journal | Journal of Physics A: Mathematical and Theoretical |
Volume | 47 |
Issue number | 42 |
DOIs | |
Publication status | Published - 8 Oct 2014 |
Bibliographical note
Date of Acceptance: 25/04/2014Keywords
- closed sets of correlations
- quantum nonlocality
- quantum distillation