Weak values: The progression from quantum foundations to tool

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Since its introduction in 1988, the weak value has made a remarkable progression within the scientific world. This article will delineate each step of this progression, displayed in four courses. The first course is the notion of a weak value in itself, the second is the first experiments together with theoretical challenges, the third is acceptance as a phenomena and further experiments, and the fourth is the use of weak values as a tool for both the further understanding of quantum puzzles and for precision measurements.We will discuss recent developments in the field and argue that the notion of contextual values as generalized eigenvalues of an observable, contextualized to the measurement being done, is the next conceptual step beyond the weak value. [Editor’s note: for a video of the talk given by Prof. Jordan at the YA80 conference at Chapman, see qua tum.chapman.edu/talk-8 and for Prof. Howell, see quantum.chapman.edu/talk-9.]




Jordan, A. N. (2014). Weak values: The progression from quantum foundations to tool. In Quantum Theory: A Two-Time Success Story: Yakir Aharonov Festschrift the Global Financial Crisis and the Indian Economy (pp. 259–278). Springer-Verlag Milan. https://doi.org/10.1007/978-88-470-5217-8_16

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