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Tripartite Entanglement in an Atom-Cavity-Optomechanical System

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Abstract

We investigate tripartite entanglement in an atom-cavity-optomechanical system consisting of a two-level atom coupled to a cavity with an oscillating mirror at one end. The maximally entangled state between the atom, the field and the oscillating mirror can be prepared in the ideal case. It is shown that the atomic coherent angle that is relatively small makes tripartite entanglement much stronger against dissipative effects in a finite time interval. The parameter k plays a very important role in the oscillating frequency of the tripartite entanglement. More importantly, the π-tangle decays more quickly with the increasing of spontaneous emission rate γ and mean photon number n.

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Acknowledgments

This project was supported by National Natural Science Foundation of China (Grant Nos. 61368002 and 61561033), the Foundation for Distinguished Young Scientists of Jiangxi Province (Grant No. 20162BCB23009), the Natural Science Foundation of Jiangxi Province (Grant No. 20161BAB202046), the Open Project Program of CAS Key Laboratory of Quantum Information (Grant No. KQI201704), and Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics (Grant No. KF201711).

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Authors and Affiliations

  1. Department of Electronic Information Engineering, Nanchang University, Nanchang, 330031, China

    Qinghong Liao, Yang Ye, Peng Jin & Nanrun Zhou

  2. CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China

    Qinghong Liao

  3. Department of Applied Physics, East China Jiaotong University, Nanchang, 330013, China

    Wenjie Nie

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  1. Qinghong Liao
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  2. Yang Ye
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  3. Peng Jin
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Correspondence to Qinghong Liao.

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Liao, Q., Ye, Y., Jin, P. et al. Tripartite Entanglement in an Atom-Cavity-Optomechanical System. Int J Theor Phys 57, 1319–1337 (2018). https://doi.org/10.1007/s10773-017-3661-7

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  • DOI: https://doi.org/10.1007/s10773-017-3661-7

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