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Fast preparation of Bell state and W state with Rydberg superatom

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Abstract

In the paper, we propose a scheme for fast preparation of Bell state and W state based on quantum Zeno dynamics and shortcuts to adiabaticity with Rydberg superatom. The quantum information is encoded in the collective state of superatom which contains n individual ladder-type Rydberg atoms. When the Rabi frequencies of classical fields are appropriately regulated, the scheme can be achieved within one step. Moreover, the effects of imperfections induced by leakage of the cavity and atomic spontaneous emission are also taken into account. The numerical simulation result shows that this scheme is robust against both cavity leakage and atomic spontaneous emission.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (Grants No. 11947078, 11947111, 11947085, 11674037, 11704042), the LiaoNing Revitalization Talents Program (Grant No. XLYC1807206), the Starting Scientific Research Foundation for Doctors of LiaoNing Province (Grant No. 2020-BS-234), the Natural Science Foundation of LiaoNing Province (Grant No. 20170540010), the Program for LiaoNing Innovative Talents in University (Grant No. LR2016001) and the Program of the Educational Office of LiaoNing Province of China (Grant No. LQ2017006)

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Authors and Affiliations

  1. College of Mathematics and Physics, Bohai University, Jinzhou, 121013, China

    Y. Q. Ji, R. J. Xiao, L. Dong & X. M. Xiu

  2. Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China

    Y. L. Liu

  3. Institute for Interdisciplinary Quantum Information Technology, Jilin Engineering Normal University, Changchun, 130052, China

    H. Li

  4. Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, China

    X. J. Zhou

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  1. Y. Q. Ji
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Ji, Y.Q., Liu, Y.L., Li, H. et al. Fast preparation of Bell state and W state with Rydberg superatom. Quantum Inf Process 19, 421 (2020). https://doi.org/10.1007/s11128-020-02928-7

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