A father protocol for quantum broadcast channels

Authors:
Frédéric Dupuis;Patrick Hayden;Ke Li
Affiliations:
Department of Computer Science, Université de Montréal, QC, Canada and School of Computer Science, McGill University, Montréal, QC, Canada;School of Computer Science, McGill University, Montréal, QC, Canada;Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, China
Venue:
IEEE Transactions on Information Theory
Year:
2010

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Abstract

A new protocol for quantum broadcast channels based on the fully quantum Slepian-Wolf protocol is presented. The protocol yields an achievable rate region for entanglement-assisted transmission of quantum information through a quantum broadcast channel that can be considered the quantum analogue of Marton's region for classical broadcast channels. The protocol can be adapted to yield achievable rate regions for unassisted quantum communication and for entanglement-assisted classical communication; in the case of unassisted transmission, the region we obtain has no independent constraint on the sum rate, only on the individual transmission rates. Regularized versions of all three rate regions are provably optimal.