Abstract
Measurements used in quantum teleportation are examined from the standpoint of the general theory of quantum-mechanical measurements. It is shown that in order to find a teleported state, it is sufficient to know only the resolution of the identity operator (positive operator-valued measure) generated by the respective instrument (the quantum operation determining the change in the state of the system as a result of the measurement) in the state space of the system, rather than the instrument itself. A protocol for quantum teleportation of the state of a system with a nondegenerate continuous spectrum based on a measurement which corresponds to a certain nonorthogonal resolution of the identity operator is proposed.
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Zh. Éksp. Teor. Fiz. 116, 777–792 (September 1999)
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Molotkov, S.N., Nazin, S.S. Teleportation of a continuous variable. J. Exp. Theor. Phys. 89, 413–420 (1999). https://doi.org/10.1134/1.558998
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DOI: https://doi.org/10.1134/1.558998