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

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

2002-11-20

arxiv.org/abs/quant-ph/0211133v1

Phys. Rev. Lett. 91 047902-1 (2003)

Physics

Quantum Physics

revtex4, 4 pages, submitted to PRL

Scientific paper

10.1103/PhysRevLett.91.047902

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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