Contextual values of observables in quantum measurements

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 val...

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Bibliographic Details
Published in:Physical review letters 2010-06, Vol.104 (24), p.240401-240401, Article 240401
Main Authors: Dressel, J, Agarwal, S, Jordan, A N
Format: Article
Language:English
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.104.240401