A tomographic approach to quantum nonlocality

Abstract

We propose a tomographic approach to study quantum nonlocality in continuous variable quantum systems. On one hand we derive a Bell-like inequality for measured tomograms. On the other hand, we introduce pseudospin operators whose statistics can be inferred from the data characterizing the reconstructed state, thus giving the possibility to use standard Bell's inequalities. Illuminating examples are also discussed.

12 pages, 6 figures, IOP style, to appear in the Special Issue of J Opt.B connected with Wigner Centennial conference (references added and updated)