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Generation and stabilization of entanglement in a cascaded atoms–cavity system

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Abstract

We discuss the generation and stabilization of entanglement between two distant atoms in a driven cascaded two-cavity system with homodyne-based feedback control. As the scheme works freely, the two atoms can fall into a steady state close to the Bell state \(\left| \varPhi _{+}\right\rangle \) with an amount of entanglement inverse to its decay rate in a narrow parameter region. The homodyne feedback enlarges this region and makes the system robust against the unexpected imperfections.

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Acknowledgments

This work was supported by National Natural Science Foundation of China (Grant Nos. 11174040 and 11174039), Youth Foundation of Jiangxi Provincial Education Department (Grant No. GJJ14276) and Open Foundation of Key Laboratory of Photoelectronics and Telecommunication of Jiangxi Province (Grant No. 2011011).

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Authors and Affiliations

  1. Department of Physics, and Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing, 100875, China

    Min Xie, Fangzhou Wu, Peng Wu & Guojian Yang

  2. Center for Quantum Science and Technology, College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang, 330022, China

    Min Xie

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  1. Min Xie
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  2. Fangzhou Wu
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  3. Peng Wu
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  4. Guojian Yang
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Correspondence to Min Xie or Guojian Yang.

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Xie, M., Wu, F., Wu, P. et al. Generation and stabilization of entanglement in a cascaded atoms–cavity system. Quantum Inf Process 14, 2477–2485 (2015). https://doi.org/10.1007/s11128-015-1010-4

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  • DOI: https://doi.org/10.1007/s11128-015-1010-4

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