New answers tagged relative-entropy
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What is the conditional min-entropy for diagonal ("classical") matrices?
Long story short: taking $\sigma_B = \rho_B$ is equivalent to taking the worst case min-entropy
$$
\hat{H}_{\min}(A|B) = - \log \max_{a,b} P(A=a|B=b)\,,
$$
and optimizing over $\sigma_B$ is equivalent ...
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