Abstract

A recent experiment which claims to use the quantum Zeno effect in the study of interaction-free measurement is analysed. It is confirmed that the mathematics of the experiment does conform to that of the original quantum Zeno proposals. However the conceptual difficulties at the heart of the original proposals are entirely missing from the recent experiment, for which there is no necessity for any intermediate correlation of states with those of another system. The results of the experiment (though not its interaction-free nature) may be understood classically.

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