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Entanglement of Hybrid State in Noninertial Frame

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Abstract

We study quantum entanglement of hybrid state composed of coherent state and fermion in noninertial frame. Quantum entanglement increases from zero to the asymptotic value with the increase of the amplitude of the coherent state. The asymptotic value is equal to the value of quantum entanglement between two fermions in noninertial frame. This means that the larger amplitude is good for quantum entanglement against the Unruh effect. We find that the entanglement of the hybrid state cannot decrease to zero as the acceleration approaches infinity, while the bosonic entanglement vanishes completely in the infinite acceleration limit. Therefore, the residual entanglement of the hybrid state can be used to process relativistic quantum information tasks.

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Data Availability

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: All data included in this study are available upon request by contact with the corresponding authors Shu-Min Wu and Xiao-Li Huang.]

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Grant Nos. 12205133), LJKQZ20222315 and 2021BSL013.

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Authors and Affiliations

  1. Department of Physics, Liaoning Normal University, Dalian, 116029, China

    Shu-Min Wu, Dan-Dan Liu, Chun-Xu Wang & Xiao-Li Huang

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  1. Shu-Min Wu
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  2. Dan-Dan Liu
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  4. Xiao-Li Huang
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All the authors were involved in the preparation of the manuscript. All the authors have read and approved the final manuscript.

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Correspondence to Shu-Min Wu or Xiao-Li Huang.

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Wu, SM., Liu, DD., Wang, CX. et al. Entanglement of Hybrid State in Noninertial Frame. Int J Theor Phys 62, 39 (2023). https://doi.org/10.1007/s10773-023-05297-w

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