# Quantum mechanical interaction-free measurements

@article{Elitzur1993QuantumMI, title={Quantum mechanical interaction-free measurements}, author={Avshalom C Elitzur and Lev Vaidman}, journal={Foundations of Physics}, year={1993}, volume={23}, pages={987-997} }

A novel manifestation of nonlocality of quantum mechanics is presented. It is shown that it is possible to ascertain the existence of an object in a given region of space without interacting with it. The method might have practical applications for delicate quantum experiments.

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