Kochen-Specker Theorem for Finite Precision Spin One Measurements

Details Kochen-Specker Theorem for Finite Precision Spin One Measurements Kochen-Specker Theorem for Finite Precision Spin One Measurements

2002-06-06

arxiv.org/abs/quant-ph/0206035v1

Phys. Rev. Lett. 88, 240402, (2002)

Physics

Quantum Physics

4 pages

Scientific paper

10.1103/PhysRevLett.88.240402

Unsharp spin 1 observables arise from the fact that a residual uncertainty about the actual orientation of the measurement device remains. If the uncertainty is below a certain level, and if the distribution of measurement errors is covariant under rotations, a Kochen-Specker theorem for the unsharp spin observables follows: There are finite sets of directions such that not all the unsharp spin observables in these directions can consistently be assigned approximate truth-values in a non-contextual way.

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