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

Jean-Pierre Amiet·Stefan Weigert
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Abstract

Consider a spin s prepared in a pure state. It is shown that, generically, the moduli of the (2s+1) spin components along three directions in space determine the state unambiguously. These probabilities are accessible experimentally by means of a standard Stern-Gerlach apparatus. To reconstruct a pure spin state is therefore possible on the basis of 3(2s+1) measured intensities.

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Jean-Pierre Amiet, Stefan Weigert. 1998-09-09. Reconstructing a pure state of a spin s through three Stern-Gerlach measurements. https://doi.org/10.1088/0305-4470%2F32%2F15%2F006

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