Simple understanding of quantum weak values.
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ABSTRACT: In this work we revisit the important and controversial concept of quantum weak values, aiming to provide a simplified understanding to its associated physics and the origin of anomaly. Taking the Stern-Gerlach setup as a working system, we base our analysis on an exact treatment in terms of quantum Bayesian approach. We also make particular connection with a very recent work, where the anomaly of the weak values was claimed from the pure statistics in association with "disturbance" and "post-selection", rather than the unique quantum nature. Our analysis resolves the related controversies through a clear and quantitative way.
SUBMITTER: Qin L
PROVIDER: S-EPMC4738312 | biostudies-other | 2016
REPOSITORIES: biostudies-other
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