1306.5321 (Muneerah Al Nuwairan)

SU(2)-Irreducibly covariant and EPOSIC channels    [PDF]

Muneerah Al Nuwairan

In this paper we introduce EPOSIC channels, a class of SU(2)-covariant quantum channels. We give their definition, a Kraus representation of them, and compute their Choi matrices. We show that these channels form the set of extreme points of all SU(2)-irreducibly covariant channels. We also compute their complementary channels, and their dual maps. As application of these channel, we get a new example of positive map that is not completely positive.

View original: http://arxiv.org/abs/1306.5321