Maximally Parsimonious Demonstrations of Quantum Nonlocality

Details Maximally Parsimonious Demonstrations of Quantum Nonlocality Maximally Parsimonious Demonstrations of Quantum Nonlocality

2011-03-01

arxiv.org/abs/1103.0306v2

Physics

Quantum Physics

4 Pages, 3 Figures

Scientific paper

Bell-nonlocality, EPR-steering, and entanglement are distinct phenomena that form a strict hierarchy of nonclassicality; Bell-nonlocality is strictly stronger than EPR-steering, which is likewise strictly stronger than entanglement. An important question is whether the complexity of tests of these phenomena exhibit the same hierarchy. We show that is indeed the case by determining the complexity cost for experiments with independent agents. For Bell-nonlocality, the most parsimonious test is the well-known CHSH test, but for EPR-steering and entanglement, maximal parsimony requires non-projective measurements. We perform these tests in a photonic experiment.

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