Appears in collection : 2017 - T3 - WS2 - Probabilistic techniques and quantum information theory

Perhaps considering minimum output entropy of high tensor powers of quantum channels is one of best ways to understand capacity of quantum channels. However, if addivity violation is a local phenomena in terms of tensor powers, we may be able to obtain a simple formula for regularized minimum output entropy. In this talk, we discuss this problem with random quantum channels generated by the orthogonal group.