Browsing Department of Pure Mathematics and Mathematical Statistics (DPMMS) by Subject "equality condition"
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(SpringerLetters in Mathematical Physics, 2016)The $\alpha$-sandwiched Rényi divergence satisfies the data processing inequality, i.e. monotonicity under quantum operations, for $\alpha$ $\geq$ 1/2. In this article, we derive a necessary and sufficient algebraic condition ...