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Quantum Information Processing
Published in: Quantum Information Processing 11/2015

01-11-2015

Entanglement concentration for concatenated Greenberger–Horne–Zeilinger state

Authors: Chang-Cheng Qu, Lan Zhou, Yu-Bo Sheng

Published in: Quantum Information Processing | Issue 11/2015

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Abstract

The concatenated Greenberger–Horne–Zeilinger state is a new type of logic-qubit entanglement, which attracts a lot of attentions recently. In this paper, we discuss the entanglement concentration for such logic-qubit entanglement. We present two groups of entanglement concentration protocols (ECPs) for logic-qubit entanglement. In the first group, the parties do not know the initial coefficients of the partially logic-qubit entanglement. In the second group, the parties know the initial coefficients of the partially logic-qubit entanglement. In our ECPs, the unsuccessful cases can be reused to increase the total success probability in the next step. These ECPs may be useful in future long-distant quantum communication.
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Metadata
Title
Entanglement concentration for concatenated Greenberger–Horne–Zeilinger state
Authors
Chang-Cheng Qu
Lan Zhou
Yu-Bo Sheng
Publication date
01-11-2015
Publisher
Springer US
Published in
Quantum Information Processing / Issue 11/2015
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-015-1113-y

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