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quant-ph2026
Submodularity of entropy under quantum convolution
Milad M. Goodarzi
We develop a submodular framework for the von Neumann entropy of discrete quantum convolutions, providing a noncommutative counterpart to the direct side of entropic additive combi…
quant-ph2026
Sharp Data-Processing Region for Quantum Conditional Rényi Entropies
Milad M. Goodarzi, Yucheng Bao, Marco Tomamichel
We study the three-parameter family of quantum conditional Rényi entropies introduced in \textit{Commun. Math. Phys.} 407, 180 (2026). We prove that the previously esta…