Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Reference frames for Bell inequality violation in the presence of superselection rules

Paterek, T and Kurzyński, P and Oi, D K L and Kaszlikowski, D (2011) Reference frames for Bell inequality violation in the presence of superselection rules. New Journal of Physics, 13. ISSN 1367-2630

Text (Paterek-etal-NJP-2011-Reference-frames-for-Bell-inequality-violation-in-the-presence-of-superselection-rules)
Paterek_etal_NJP_2011_Reference_frames_for_Bell_inequality_violation_in_the_presence_of_superselection_rules.pdf - Final Published Version
License: Creative Commons Attribution-NonCommercial-ShareAlike 3.0 logo

Download (633kB) | Preview


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.