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A Sharp Fannes-type Inequality for the von Neumann Entropy
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A Sharp Fannes-type Inequality for the von Neumann Entropy
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We derive an inequality relating the entropy difference between two quantum states to their trace norm distance, sharpening a well-known inequality due to M. Fannes. In our inequality, equality can be attained for every prescribed value of the trace norm distance.
Forward citations
Cited by 4 Pith papers
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