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- Title
Entanglement concentration for concatenated Greenberger-Horne-Zeilinger state.
- Authors
Qu, Chang-Cheng; Zhou, Lan; Sheng, Yu-Bo
- 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.
- Subjects
QUBITS; QUANTUM entanglement; QUANTUM communication; TOPOLOGY; PARTICLE dynamics analysis
- Publication
Quantum Information Processing, 2015, Vol 14, Issue 11, p4131
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-015-1113-y