Physics – Quantum Physics
Scientific paper
2008-11-18
Phys. Rev. Lett. 102, 110402 (2009)
Physics
Quantum Physics
5 pages. 6 figures. Minor Revisions. To appear in PRL
Scientific paper
10.1103/PhysRevLett.102.110402
By studying generalized non-signalling theories, the hope is to find out what makes quantum mechanics so special. In the present paper, we revisit the paradigmatic model of non-signalling boxes and introduce the concept of a genuine box. This will allow us to present the first generalized non-signalling model featuring quantum-like dynamics. In particular, we present the coupler, a device enabling non-locality swapping, the analogue of quantum entanglement swapping, as well as teleportation. Remarkably, part of the boundary between quantum and post-quantum correlations emerges in our study.
Brunner Nicolas
Popescu Sandu
Skrzypczyk Paul
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