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About Position Measurements Which Do Not Show the Bohmian Particle Position
Yakir Aharonov, Lev Vaidman
``Weak'', ``protective'', and ``delayed observation'' measurements are analyzed in the framework of the Bohm interpretation of quantum theory. It is argued that the above varieties…
Applications of a Simple Formula
Lior Goldenberg, Lev Vaidman
New applications of the formula are discussed. Simple derivations of the Heisenberg uncertainty principle and of…
Quantum Cryptography Based on Orthogonal States
Lior Goldenberg, Lev Vaidman
All existing quantum cryptosystems use non-orthogonal states as the carriers of information. Non-orthogonal states cannot be cloned (duplicated) by an eavesdropper. In result, any…
NONLOCALITY OF A SINGLE PHOTON REVISITED AGAIN
L. Vaidman
Comment on L. Hardy, Phys. Rev. Lett. {\bf 73}, 2279 (1994). It is argued that the experiment proposed by Hardy should not be considered as a single photon experiment.