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Imprinting a complete information about a quantum channel on its output state

Giacomo Mauro D'Ariano·Paoloplacido Lo Presti
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Abstract

We introduce a novel property of bipartite quantum states, which we call "faithfulness", and we say that a state is faithful when acting with a channel on one of the two quantum systems, the output state carries a complete information about the channel. The concept of faithfulness can also be extended to sets of states, when the output states patched together carry a complete imprinting of the channel.

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Giacomo Mauro D'Ariano, Paoloplacido Lo Presti. 2002-11-20. Imprinting a complete information about a quantum channel on its output state. https://doi.org/10.1103/physrevlett.91.047902

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