Hi all, This Wednesday, August 4, we will have two visitors from Geneva University, Jean-Daniel Bancal and Denis Rosset. They will present to us one of their subjects of interest, namely bi- and multi-locality. I hope that many of you can make it to their presentation. Best regards, Stefan ________________________________________________________________ Presentation by Jean-Daniel Bancal and Denis Rosset, Group of Applied Physics, Geneva University. Wed., August 4, 14:00, CAB G 59 Title: Multi-nonlocality : how can we characterize the quantum correlations of entangled independent sources ? Abstract : We consider a three-party experiment with two independent quantum sources (as in entanglement swapping). In this scenario, we show that the local polytope is further restricted to a non-convex set, whose boundaries are described by non-linear inequalities. In particular, we exhibit correlations that a classical model can reproduce with a maximal visibility of 50% (an improvement of 20% over the CHSH case). ________________________________________________________________