ar X iv : 0 81 2 . 07 58 v 2 [ qu an t - ph ] 1 5 Ju l 2 00 9 Couplers for non - locality swapping
نویسنده
چکیده
Studying generalized non-signalling theories brings insight to the foundations of quantum mechanics. Here we focus on a dynamical process in such general theories, namely non-locality swapping, the analogue of quantum entanglement swapping. In order to implement such a protocol, one needs to define a coupler, which performs the equivalent of quantum joint measurements on generalized ‘box-like’ states. Establishing a connection to Bell inequalities, we define consistent couplers for theories containing an arbitrary amount of non-locality, which leads us to introduce the concepts of perfect and minimal couplers. Remarkably, Tsirelson’s bound for quantum non-locality naturally appears in our study. PACS numbers: 03.65.Ud Couplers for non-locality swapping 2
منابع مشابه
ar X iv : 0 80 7 . 10 58 v 2 [ he p - ph ] 1 4 Ju l 2 00 8 July 14 , 2008 top 2008 Conference Summary
This is a summary of the talks presented at the International Workshop on Top Quark Physics (top2008) held in Elba, Italy, May 18-24, 2008.
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