Perspectives on Information Causality
The information causality principle  is a generalisation
of the no-signalling principle which is obeyed by quantum and
classical physics, but which rules out many other theories. In this
talk, I will present two new perspectives on information causality
: a probabilistic analysis yielding simple quadratic bounds on the
set of quantum correlations, and an entropic analysis suggesting that
the ability to define a `good' measure of entropy in quantum theory is
one of its defining features.
 M. Pawlowski et al., Nature 461, 1101 (2009).
 S.W. Al-Safi and A.J. Short, PRA 84, 042323 (2011).