Are interaction-free measurements interaction free? |
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Authors: | L Vaidman |
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Institution: | (1) School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel-Aviv, 69978, Israel |
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Abstract: | 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. |
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