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|Title:||Reference frames for Bell inequality violation in the presence of superselection rules|
|Authors:||Paterek, T. |
|Source:||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. https://doi.org/4/043027|
|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|
|Appears in Collections:||Staff Publications|
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