Circulant states with vanishing quantum discord

Details Circulant states with vanishing quantum discord Circulant states with vanishing quantum discord

2011-04-10

arxiv.org/abs/1104.1804v1

Physics

Quantum Physics

8 pages

Scientific paper

We analyze a class of 2-qudit circulant states. They define generalization of
well known 2-qubit X-states. We formula the necessary and sufficient criteria
for vanishing quantum discord. We illustrate our analysis by an important
subclass of circulant states -- so called Bell diagonal states.

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