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Quantum information processing under maximal distance measures
Bartosz Regula, Ludovico Lami, Mario Berta +1
The measures of distance frequently used in quantum information, such as trace distance or fidelity-based purified distance, are the smallest extensions of the corresponding distan…
Approximate majorization and high-order capacity of quantum depolarizing channels
Zhiwei Song, Xin Wang, Marco Tomamichel +1
A central challenge in quantum information theory is to determine whether entanglement provides an advantage for information processing when coherent operations across multiple cha…
Second-Order Expansion of Privacy Amplification Under f-Divergence Criteria
Mario Berta, Hao-Chung Cheng, Marco Tomamichel
We derive the second-order asymptotics of randomness extraction from memoryless sources with side information under security criteria based on a broad class of Csiszàr f-divergence…