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Entanglement distillation for atomic states via cavity QED

Author

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  • Yang, Ming
  • Song, Wei
  • Cao, Zhuo-Liang

Abstract

Following a recent proposal (Phys. Rev. Lett. 85 (2000) 2392) about quantum information processing using dispersive atom–cavity interaction, in this paper, we proposed a physical scheme to concentrate the pure non-maximally entangled atomic states via cavity QED by using atomic collision in a far-off-resonant cavity. The most distinctive advantage of our scheme is that there is no excitation of cavity mode during the distillation procedure. Therefore the requirement on the quality of cavity is greatly loosened.

Suggested Citation

  • Yang, Ming & Song, Wei & Cao, Zhuo-Liang, 2004. "Entanglement distillation for atomic states via cavity QED," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 341(C), pages 251-261.
    • Handle: RePEc:eee:phsmap:v:341:y:2004:i:c:p:251-261
    DOI: 10.1016/j.physa.2004.04.108
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    References listed on IDEAS

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    1. Jian-Wei Pan & Sara Gasparoni & Rupert Ursin & Gregor Weihs & Anton Zeilinger, 2003. "Experimental entanglement purification of arbitrary unknown states," Nature, Nature, vol. 423(6938), pages 417-422, May.
    2. 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.
    3. Jian-Wei Pan & Christoph Simon & Časlav Brukner & Anton Zeilinger, 2001. "Entanglement purification for quantum communication," Nature, Nature, vol. 410(6832), pages 1067-1070, April.
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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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