A family of quantum protocols

I Devetek, AW Harrow, AJ Winter

Research output: Contribution to journalArticle (Academic Journal)peer-review

86 Citations (Scopus)


We introduce three new quantum protocols involving noisy quantum channels and entangled states, and relate them operationally and conceptually with four well-known old protocols. Two of the new protocols (the mother and father) can generate the other five "child" protocols by direct application of teleportation and superdense coding, and can be derived in turn by making the old protocols "coherent." This gives very simple proofs for two famous old protocols (the hashing inequality and quantum channel capacity) and provides the basis for optimal trade-off curves in several quantum information processing tasks.
Translated title of the contributionA family of quantum protocols
Original languageEnglish
Pages (from-to)1 - 4
Number of pages4
JournalPhysical Review Letters
Volume93 (23, 230504)
Publication statusPublished - Dec 2004

Bibliographical note

Publisher: American Physical Society
Other identifier: IDS Number: 876OY


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