Quantum Information Processing

, Volume 11, Issue 2, pp 431–441

Scheme for entanglement concentration of unknown partially entangled three-atom W states in cavity QED

  • Hong-Fu Wang
  • Li-Li Sun
  • Shou Zhang
  • Kyu-Hwang Yeon
Article

DOI: 10.1007/s11128-011-0255-9

Cite this article as:
Wang, HF., Sun, LL., Zhang, S. et al. Quantum Inf Process (2012) 11: 431. doi:10.1007/s11128-011-0255-9

Abstract

We propose a practical scheme to concentrate entanglement in a pair of unknown partially entangled three-atom W states in cavity quantum electrodynamics (QED). In the scheme, Alice, Bob, and Charlie at three distant parties can obtain one maximally entangled three-atom W state with the certain success probability from two identical partially entangled three-atom W states by local operations and classical communication. We propose the detailed process of entanglement concentration and analyze the experimental feasibility of the scheme.

Keywords

Entanglement concentration Cavity QED W state 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Hong-Fu Wang
    • 1
  • Li-Li Sun
    • 2
  • Shou Zhang
    • 1
    • 2
  • Kyu-Hwang Yeon
    • 3
  1. 1.Department of Physics, College of ScienceYanbian UniversityYanjiPeople’s Republic of China
  2. 2.Center for the Condensed-Matter Science and Technology, Department of PhysicsHarbin Institute of TechnologyHarbinPeople’s Republic of China
  3. 3.Department of Physics & BK21 Program for Device Physics, College of Natural ScienceChungbuk National UniversityCheongjuRepublic of Korea

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