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Entanglement distillation for W class states

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  • Yang, Ming
  • Cao, Zhuo-Liang

Abstract

In this paper, we first propose a general entanglement distillation protocol for three-particle W class states, which can concentrate the W′ state (non-maximally entangled W state). The general protocol is mainly based on the unitary transformations on the auxiliary particles and the entangled particles, and a feasible physical scheme is suggested based on the cavity QED techniques. The protocol and scheme can be extended to the entanglement concentration of N-particle case.

Suggested Citation

  • Yang, Ming & Cao, Zhuo-Liang, 2004. "Entanglement distillation for W class states," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 337(1), pages 141-148.
    • Handle: RePEc:eee:phsmap:v:337:y:2004:i:1:p:141-148
    DOI: 10.1016/j.physa.2004.02.016
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    References listed on IDEAS

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    1. Cao, Zhuo-Liang & Yang, Ming, 2004. "Probabilistic teleportation of unknown atomic state using W class states," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 337(1), pages 132-140.
    2. Jian-Wei Pan & Christoph Simon & Časlav Brukner & Anton Zeilinger, 2001. "Entanglement purification for quantum communication," Nature, Nature, vol. 410(6832), pages 1067-1070, April.
    3. L.-M. Duan & M. D. Lukin & J. I. Cirac & P. Zoller, 2001. "Long-distance quantum communication with atomic ensembles and linear optics," Nature, Nature, vol. 414(6862), pages 413-418, November.
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    Cited by:

    1. Zhang, Li-Hua & Yang, Ming & Cao, Zhuo-Liang, 2007. "Entanglement concentration for unknown W class states," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 374(2), pages 611-616.

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