Bell inequalities for position measurements
2004 (English)In: Physical Review A, ISSN 1050-2947, Vol. 70, no 2, 022102-1-022102-5 p.Article in journal (Refereed) Published
The bits of the binary expansion of position measurement results were used to derive Bell inequalities for position measurements. The output state of the nondegenerate optical parametric amplifier (NOPA) was used to obtain violations of these inequalities. It was shown that the position operator itself, together with other suitable operators, also can be used to violate the Bell inequality, deriving a Bell inequality more suited to the original Einstein-Podolsky-Rosen (EPR) setting. It was concluded that the NOPA state cannot be described by a local realist model, despite having a strictly positive Wigner function.
Place, publisher, year, edition, pages
2004. Vol. 70, no 2, 022102-1-022102-5 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-45668DOI: 10.1103/PhysRevA.70.022102OAI: oai:DiVA.org:liu-45668DiVA: diva2:266564