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Fast quantum cloning of \(1\rightarrow n \) orbital state with Rydberg superatom

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Abstract

We propose an efficient scheme for realizing the \(1\rightarrow n\) orbital state quantum cloning by using Rydberg superatoms. We place an ultracold Rydberg atomic ensemble which contains n individual ladder type Rydberg atoms inside the blocking ball to form a superatom, the quantum information is encoded the effective energy levels of superatom. Combined with quantum Zeno dynamics and shortcuts to adiabaticity, the \(1\rightarrow 3\) orbital state quantum cloning process can be quickly completed. Moreover, we generalize the idea to the case of \(1\rightarrow n\). At last, the influence of decoherence factors on fidelity is considered. The numerical simulation results show that high fidelity can be obtained.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (Grant Nos. 11947078, 11674037), the Program of the Educational Office of LiaoNing Province of China (Grant Nos. LJKZ1015, LJ2020005), the Natural Science Foundation of LiaoNing Province (Grant Nos. 2020-BS-234, 2021-MS-317), the Program of Liaoning BaiQianWan Talents Program (Grant No. 2021921096), the LiaoNing Revitalization Talents Program (Grant No. XLYC1807206) and the Natural Science Foundation of Jilin Province (Grant No. YDZJ202201ZYTS324)

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Authors and Affiliations

  1. College of Physical Science and Technology, Bohai University, Jinzhou, 121013, China

    W. Y. Zhang, Q. P. Shao, Y. Q. Ji, Y. L. Liu, L. Dong & X. M. Xiu

  2. Aviation University of Air Force, Changchun, 130022, Jilin, China

    S. He

  3. Department of Physics, School of Science, Yanbian University, Yanji, 133022, China

    Y. L. Liu

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

    H. Li

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  1. W. Y. Zhang
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Zhang, W.Y., He, S., Shao, Q.P. et al. Fast quantum cloning of \(1\rightarrow n \) orbital state with Rydberg superatom. Quantum Inf Process 22, 307 (2023). https://doi.org/10.1007/s11128-023-04038-6

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