One-step error correction for multipartite polarization entanglement

Fu-Guo Deng
Phys. Rev. A 83, 062316 – Published 14 June 2011

Abstract

We present two economical one-step error-correction protocols for multipartite polarization-entangled systems in a Greenberger-Horne-Zeilinger state. One uses spatial entanglement to correct errors in the polarization entanglement of an N-photon system, resorting to linear optical elements. The other uses frequency entanglement to correct errors in the polarization entanglement of an N-photon system. The parties in quantum communication can obtain a maximally entangled state from each N-photon system transmitted with one step in these two protocols, and both of their success probabilities are 100%, in principle. That is, they both work in a deterministic way, and they do not largely consume the less-entangled photon systems, which is far different from conventional multipartite entanglement purification schemes. These features may make these two protocols more useful for practical applications in long-distance quantum communication.

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  • Received 18 January 2011

DOI:https://doi.org/10.1103/PhysRevA.83.062316

©2011 American Physical Society

Authors & Affiliations

Fu-Guo Deng*

  • Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China

  • *fgdeng@bnu.edu.cn

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Issue

Vol. 83, Iss. 6 — June 2011

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