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International Journal of Quantum Information

A NOTE ON "SPLITTING FOUR ENSEMBLES OF TWO-QUBIT QUANTUM INFORMATION VIA THREE EINSTEIN–PODOLSKY–ROSEN PAIRS"

Yimin Liu, Mingling Li, Hua‐Min Gao, Xiansong Liu, Zhanjun Zhang

Published Apr 1, 2010• 1 citation
Publisher

Abstract

Enlightened by the novel idea in recent literature, we improve the tripartite quantum scheme to be a more economical and efficient one for splitting any two-qubit state in the four specific ensembles with only two Einstein–Podolsky–Rosen pairs as quantum channels.
DOI
10.1142/s0219749910006095

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Using a class of three-qubit W states as quantum channel, we present a quantum teleportation (QT) scheme and a quantum information splitting (QIS) scheme, respectively. We compare our schemes with two similar schemes proposed recently. It is found that our QT scheme reduces the operation difficulty in contrast to Agrawal and Pati's QT scheme [Phys. Rev. A74 (2006) 062320], and our QIS scheme is more applicable than Zheng's QIS scheme [Phys. Rev. A74 (2006) 054303] for the latter is only a special case of the former in some given conditions.