A family of quantum protocols

Abstract

We introduce two dual, purely quantum protocols: for entanglement distillation assisted by quantum communication (``mother'' protocol) and for entanglement assisted quantum communication (``father'' protocol). We show how a large class of ``children'' protocols (including many previously known ones) can be derived from the two by direct application of teleportation or super-dense coding. Furthermore, the parent may be recovered from most of the children protocols by making them ``coherent''. We also summarize the various resource trade-offs these protocols give rise to.

5 pages, 1 figure

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• The capacity of the noisy quantum channel
• Coding Theorem and Strong Converse for Quantum Channels
• Negative entropy and information in quantum mechanics
• Coherent Communication of Classical Messages

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