Abstract
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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References
J. S. Bell,Physica 1, 195 (1964).
A. Aspect, J. Dalibard, and G. Roger,Phys. Rev. Lett. 49, 1804 (1982).
Y. Aharonov and D. Bohm,Phys. Rev. 115, 1804 (1959).
D. M. Greenberger,Rev. Mod. Phys. 55, 875 (1983).
P. Grangier, A. G. Roger, and A. Aspect,Europhys. Lett. 1, 173 (1986).
J. von Neumann,Mathematical Foundations of Quantum Theory and Measurement (Princeton University Press, Princeton, 1983).
H. Everett,Rev. Mod. Phys. 29, 454 (1957).
R. H. Dicke,Am. J. Phys. 49, 925 (1981).
L. Hardy,Phys. Lett. A 160, 1 (1991).
N. Cufaro-Petroni and J. P. Vigier,Found. Phys. 22, 1 (1992).
L. Hardy,Phys. Rev. Lett. 68, 2981 (1992).
L. Hardy,Phys. Lett. A 167, 11 (1992).
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Elitzur, A.C., Vaidman, L. Quantum mechanical interaction-free measurements. Found Phys 23, 987–997 (1993). https://doi.org/10.1007/BF00736012
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DOI: https://doi.org/10.1007/BF00736012