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Reconstructing a pure state of a spin s through three Stern-Gerlach measurements

By S. Weigert and Jean-Pierre Amiet

Abstract

Consider a spin s prepared in a pure state. It is shown that, generically, the moduli of the spin components along three directions in space determine the state unambiguously. These probabilities are accessible experimentally by means of a standard Stern-Gerlach apparatus. It is therefore possible to reconstruct a generic pure state on the basis of 6s independent measured intensities

Year: 1999
DOI identifier: 10.1088/0305-4470
OAI identifier: oai:eprints.whiterose.ac.uk:1351

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