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

01.11.2015

Entanglement concentration for concatenated Greenberger–Horne–Zeilinger state

verfasst von: Chang-Cheng Qu, Lan Zhou, Yu-Bo Sheng

Erschienen in: Quantum Information Processing | Ausgabe 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.
Vorheriger Artikel Threefold entanglement matching
Nächster Artikel Environment-assisted entanglement restoration and improvement of the fidelity for quantum teleportation

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Metadaten
Titel
Entanglement concentration for concatenated Greenberger–Horne–Zeilinger state
verfasst von
Chang-Cheng Qu
Lan Zhou
Yu-Bo Sheng
Publikationsdatum
01.11.2015
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 11/2015
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-015-1113-y

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