Nonlocality from local contextuality

Abstract

We experimentally show that nonlocality can be produced from single-particle contextuality by using two-particle correlations which do not violate any Bell inequality by themselves. This demonstrates that nonlocality can come from an {\em a priori} different simpler phenomenon, and connects contextuality and nonlocality, the two critical resources for, respectively, quantum computation and secure communication. From the perspective of quantum information, our experiment constitutes a proof of principle that quantum systems can be used simultaneously for both quantum computation and secure communication.

6 pages, 4 figures

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Cited by in corpus (27)

• Beating the channel capacity limit for superdense coding with entangled ququarts
• Kochen-Specker Contextuality
• Experimental Certification of Sustained Entanglement and Nonlocality after Sequential Measurements
• Nonlocality from local contextuality
• Necessary and sufficient condition for contextuality from incompatibility
• Optimal classical simulation of state-independent quantum contextuality
• Minimal true-implies-false and true-implies-true sets of propositions in noncontextual hidden variable theories
• Deriving robust noncontextuality inequalities from algebraic proofs of the Kochen-Specker theorem: the Peres-Mermin square
• Activation of monogamy in non-locality using local contextuality
• Bell non-locality and Kochen-Specker contextuality: How are they connected?
• Local measurement uncertainties impose a limit on non-local quantum correlations
• Certifying sets of quantum observables with any full-rank state
• Optimal and tight Bell inequalities for state-independent contextuality sets
• Quantitative relations between different measurement contexts
• Bell nonlocality between sequential pairs of observers
• The simplest Kochen-Specker set
• Local hidden-variable model for a recent experimental test of quantum nonlocality and local contextuality
• Irreducible magic sets for $n$-qubit systems
• Lifting noncontextuality inequalities
• Experimental implementation of Hardy-like quantum pigeonhole paradoxes
• Tracing quantum correlations back to collective interferences
• Twenty years of quantum contextuality at USTC
• Violation of no-signaling on a public quantum computer
• Trade-off relations between Bell nonlocality and local Kochen-Specker contextuality in generalized Bell scenarios
• Classical Invasive Description of Informationally-Complete Quantum Processes
• A framework for quantum homomorphic encryption with experimental demonstration
• Simultaneous All-versus-Nothing Refutation of Local Realism and Noncontextuality by a Single System