1209.5035 (Ali Saif M. Hassan et al.)

Invariance of quantum correlations under local channel for a bipartite
quantum state    [PDF]

Ali Saif M. Hassan, Pramod S. Joag

We show that the quantum discord and the measurement induced non-locality (MiN) in a bipartite quantum state is invariant under the action of a local quantum channel if and only if the channel is invertible. In particular, these quantities are invariant under a local unitary channel.

View original: http://arxiv.org/abs/1209.5035