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We introduce contextual values as a generalization of the eigenvalues of an observable that takes into account both the system observable and a general measurement procedure. This technique leads to a natural definition of a general conditioned average that converges uniquely to the quantum weak value in the minimal disturbance limit. As such, we address the controversy in the literature regarding the theoretical consistency of the quantum weak value by providing a more general theoretical framework and giving several examples of how that framework relates to existing experimental and theoretical results.


This article was originally published in Physical Review Letters, volume 104, in 2010. DOI: 10.1103/PhysRevLett.104.240401

Peer Reviewed



American Physical Society



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