Modular values and weak values of quantum observables

Y. Kedem, L. Vaidman

Research output: Contribution to journalArticlepeer-review


The concept of a modular value of an observable of a pre- and postselected 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 multiqubit meter provides an explanation of some current experiments.

Original languageEnglish
Article number230401
JournalPhysical Review Letters
Issue number23
StatePublished - 30 Nov 2010


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