Luis Aina, AlfredoSánchez Soto, Luis Lorenzo2023-06-202023-06-201998-08[1] A. C. Elitzur and L. Vaidman, Found. Phys. 23, 987 (1993); L. Vaidman, Quantum Opt. 6, 119 (1994). [2] P. Kwiat, H. Weinfurter, T. Herzog, and A. Zeilinger, Phys. Rev. Lett. 74, 4763 (1995); P. Kwiat, H. Weinfurter, T. Herzog, A. Zeilinger, and M. Kasevich, Ann. (N.Y.) Acad. Sci. 755, 383 (1995). [3] R. H. Dicke, Am. J. Phys. 49, 925 (1981); L. Hardy, Phys. Lett. A 167, 11 (1992). [4] M. Pavičić, Phys. Lett. A 223, 241 (1996). [5] F. X. Kärtner and H. A. Haus, Phys. Rev. A 47, 4585 (1993). [6] H. Paul and M. Pavičić, Int. J. Theor. Phys. 35, 2085 (1996); J. Opt. Soc. Am. B 14, 1275 (1997). [7] B. Yurke, S. L. McCall, and J. R. Klauder, Phys. Rev. A 33, 4033 (1986). [8] J. M. Raimond, M. Brune, and S. Haroche, Phys. Rev. Lett. 79, 1964 (1997). [9] S. M. Tan and D. F. Walls, Phys. Rev. A 47, 4663 (1993). [10] M. O. Scully, B.-G. Englert, and H. Walther, Nature (London) 351, 111 (1991).1050-294710.1103/PhysRevA.58.836https://hdl.handle.net/20.500.14352/59702© 1998 The American Physical Society. We wish to thank Professor G. García-Alcaine for a careful reading of the manuscript and helpful discussions.A full quantum analysis of 100% efficient interaction-free measurements is presented. It is shown that it is possible to describe consistently the phenomenon in terms of an effective interaction between object and apparatus that disturbs measurable quantities of the observed system.engjournal articlehttp://dx.doi.org/10.1103/PhysRevA.58.836http://journals.aps.org/open access535OpticsPhysicsAtomicMolecular & ChemicalÓptica (Física)2209.19 Óptica Física