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Strong Converses for Quantum Channel Capacities from Blowing-Up Lemmata
Salman Beigi, Marco Tomamichel
A quantum channel can transmit quantum states, classical messages, or classical messages that remain secret from its environment. We prove exponential strong converses for all thre…
Additivity of quantum relative entropies as a single-copy criterion
Salman Beigi, Roberto Rubboli, Marco Tomamichel
The fundamental goal of information theory is to characterize complex operational tasks using efficiently computable information quantities, Shannon's capacity formula being the pr…
Some properties and applications of the new quantum -divergences
Salman Beigi, Christoph Hirche, Marco Tomamichel
Recently, a new definition for quantum -divergences was introduced based on an integral representation. These divergences have shown remarkable properties, for example when inve…
The Power of Unentanglement
Scott Aaronson, Salman Beigi, Andrew Drucker +2
The class QMA(k), introduced by Kobayashi et al., consists of all languages that can be verified using k unentangled quantum proofs. Many of the simplest questions about this class…