Are Interaction-Free Measurements Interaction Free?

L. Vaidman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In 1993, Elitzur and Vaidman introduced the concept of interaction-free measurements, which allowed finding objects without "touching" them. In the proposed method, since the objects were not touched, even by photons, thus, the interaction-free measurements can be called "seeing in the dark." Since then, several experiments have been successfully performed and various modifications were suggested. Recently, however, the validity of the term "interaction-free" has been questioned. The criticism of the name is briefly reviewed and the meaning of the interaction-free measurements is clarified.

Original languageEnglish
Pages (from-to)352-357
Number of pages6
JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Issue number3
StatePublished - Sep 2001


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