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Generation of two-axis countertwisting squeezed spin states via Uhrig dynamical decoupling

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Abstract

We propose a scheme to generate two-axis countertwisting squeezed spin states from a one-axis twisting Hamiltonian via Uhrig dynamical decoupling. The proposed scheme significantly reduces the number of control pulses or requires shorter evolution time compared to previous proposals. The minimum number of applied pulses changes relative to the spin number almost linearly. The proposed scheme significantly relieves the experimental demand on the applied pulses or the evolution time, and we expect it would be within the reach of current spin squeezing experiment.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (Grant Nos. 11547244, 11547208, 11974334), and the Foundation of Collaborative Innovation Team of Discipline Characteristics of Jianghan University (Grant No. 03100061).

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Authors and Affiliations

  1. Institute for Interdisciplinary Research, Jianghan University, Wuhan, 430056, China

    Jiying Zhang & Shan Wu

  2. Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120 DK, 8000, Aarhus, Denmark

    Yongchang Zhang

  3. Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, 230026, China

    Zhengwei Zhou

  4. CAS Center for Excellence in Quantum Information and Quantum Physics, Hefei, 230026, China

    Zhengwei Zhou

Authors
  1. Jiying Zhang
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  2. Shan Wu
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  3. Yongchang Zhang
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  4. Zhengwei Zhou
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Correspondence to Jiying Zhang or Zhengwei Zhou.

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Zhang, J., Wu, S., Zhang, Y. et al. Generation of two-axis countertwisting squeezed spin states via Uhrig dynamical decoupling. Sci. China Inf. Sci. 64, 122502 (2021). https://doi.org/10.1007/s11432-020-3075-2

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  • DOI: https://doi.org/10.1007/s11432-020-3075-2

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