Universal Recovery Maps and Approximate Sufficiency of Quantum Relative Entropy
نویسندگان
چکیده
منابع مشابه
Universal recovery from a decrease of quantum relative entropy
The data processing inequality states that the quantum relative entropy between two states can never increase by applying the same quantum channel to both states. This inequality can be strengthened with a remainder term in the form of a distance to the closest recovered state whereas the action of the channel is perfectly reversed on the second state. We show the existence of an explicit recov...
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ژورنال
عنوان ژورنال: Annales Henri Poincaré
سال: 2018
ISSN: 1424-0637,1424-0661
DOI: 10.1007/s00023-018-0716-0