Circulant states with vanishing quantum discord
B Bylicka, D Chruściński - Open Systems & Information Dynamics, 2012 - World Scientific
B Bylicka, D Chruściński
Open Systems & Information Dynamics, 2012•World ScientificWe analyze a class of 2-qudit circulant states. They define a generalization of well-known 2-
qubit X-states. We formulate necessary and sufficient criteria for vanishing of quantum
discord. We illustrate our analysis by an important subclass of circulant states—the so-called
Bell diagonal states.
qubit X-states. We formulate necessary and sufficient criteria for vanishing of quantum
discord. We illustrate our analysis by an important subclass of circulant states—the so-called
Bell diagonal states.
We analyze a class of 2-qudit circulant states. They define a generalization of well-known 2-qubit X-states. We formulate necessary and sufficient criteria for vanishing of quantum discord. We illustrate our analysis by an important subclass of circulant states — the so-called Bell diagonal states.
World Scientific