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arxiv: 1104.1804 · v1 · pith:Z23TSZ5Inew · submitted 2011-04-10 · 🪐 quant-ph

Circulant states with vanishing quantum discord

classification 🪐 quant-ph
keywords statescirculantdiscordquantumvanishinganalysisanalyzebell
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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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