Electronic Entanglement Concentration for the Concatenated Greenberger-Horne-Zeilinger State

Concatenated Greenberger-Horne-Zeilinger (C-GHZ) state, which encodes many physical qubits in a logic qubit will have important applications in both quantum communication and computation. In this paper, we will describe an entanglement concentration protocol (ECP) for electronic C-GHZ state, by expl...

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Bibliographic Details
Published inInternational journal of theoretical physics Vol. 56; no. 6; pp. 1912 - 1928
Main Authors Ding, Shang-Ping, Zhou, Lan, Gu, Shi-Pu, Wang, Xing-Fu, Sheng, Yu-Bo
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2017
Springer Nature B.V
Subjects
Beam splitters
Computation
Controller area network
Elementary Particles
Mathematical and Computational Physics
Physics
Physics and Astronomy
Quantum entanglement
Quantum Field Theory
Quantum Physics
Quantum theory
Qubits (quantum computing)
Theoretical
Concatenated Greenberger-Horne-Zeilinger state
Quantum computation
Entanglement concentration
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Summary:Concatenated Greenberger-Horne-Zeilinger (C-GHZ) state, which encodes many physical qubits in a logic qubit will have important applications in both quantum communication and computation. In this paper, we will describe an entanglement concentration protocol (ECP) for electronic C-GHZ state, by exploiting the electronic polarization beam splitters (PBSs) and charge detection. This protocol has several advantages. First, the parties do not need to know the exact coefficients of the initial less-entangled C-GHZ state, which makes this protocol feasible. Second, with the help of charge detection, the distilled maximally entangled C-GHZ state can be remained for future application. Third, this protocol can be repeated to obtain a higher success probability. We hope that this protocol can be useful in future quantum computation based on electrons.
ISSN:0020-7748
1572-9575
DOI:10.1007/s10773-017-3337-3