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Fundamental Limit on ``Interaction Free'' Measurements

Steven H. Simon·P. M. Platzman
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Abstract

In ``interaction free'' measurements, one typically wants to detect the presence of an object without touching it with even a single photon. One often imagines a bomb whose trigger is an extremely sensitive measuring device whose presence we would like to detect without triggering it. We point out that all such measuring devices have a maximum sensitivity set by the uncertainty principle, and thus can only determine whether a measurement is ``interaction free'' to within a finite minimum resolution. We further discuss exactly what can be achieved with the proposed ``interaction free'' measurement schemes.

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Steven H. Simon, P. M. Platzman. 1999-05-14. Fundamental Limit on ``Interaction Free'' Measurements. https://doi.org/10.1103/physreva.61.052103

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