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arXiv · 1007.5281

Modular values and weak values of quantum observables

Yaron Kedem·Lev Vaidman
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Abstract

The concept of a modular value of an observable of a pre- and post-selected quantum system is introduced. It is similar in form and in some cases has a close connection to the weak value of an observable, but instead of describing an effective interaction when the coupling is weak, it describes a coupling of any strength but only to qubit meters. The generalization of the concept for a coupling of a composite system to a multi-qubit meter provides an explanation of some current experiments.

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Yaron Kedem, Lev Vaidman. 2010-07-29. Modular values and weak values of quantum observables. https://doi.org/10.1103/physrevlett.105.230401

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