00755nas a2200121   4500000000100000008004100001100001900042700002200061245008000083856004600163490000700209520041700216       2016                            d1 aŁukasz Pawela1 aZbigniew Puchała00aQuantifying channels output similarity with applications to quantum control  uhttps://doi.org/10.1007/s11128-015-1238-z0 v153 a<p>In this work we aim at quantifying quantum channel output similarity. In order to achieve this, we introduce the notion of quantum channel superfidelity, which gives us an upper bound on the quantum channel fidelity. This quantity is expressed in a clear form using the Kraus representation of a quantum channel. As examples, we show potential applications of this quantity in the quantum control field.</p>