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Title: Reference frames for Bell inequality violation in the presence of superselection rules
Authors: Paterek, T. 
Kurzyński, P. 
Oi, D.K.L.
Kaszlikowski, D. 
Issue Date: Apr-2011
Citation: Paterek, T., Kurzyński, P., Oi, D.K.L., Kaszlikowski, D. (2011-04). Reference frames for Bell inequality violation in the presence of superselection rules. New Journal of Physics 13 : -. ScholarBank@NUS Repository.
Abstract: Superselection rules (SSRs) constrain the allowed states and operations in quantum theory. They limit preparations and measurements and hence impact our ability to observe non-locality, in particular the violation of Bell inequalities. We show that a reference frame compatible with a particle number SSR does not allow observers to violate a Bell inequality if and only if it is prepared using only local operations and classical communication. In particular, jointly prepared separable reference frames are sufficient for obtaining violations of a Bell inequality. We study the size and non-local properties of such reference frames using superselection-induced variance. These results suggest the need for experimental Bell tests in the presence of superselection. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
ISSN: 13672630
DOI: 10.1088/1367-2630/13/4/043027
Appears in Collections:Staff Publications

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