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Protecting the entanglement of two interacting atoms in a cavity by quantum Zeno dynamics

  • Regular Article - Quantum Optics
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Abstract

In this paper, we study the dynamics of atom–atom entanglement inside a single-mode cavity using quantum Zeno dynamics (QZD). The system under study consists of two two-level atoms with dipole–dipole and Ising interactions. By applying QZD, based on strong continuous coupling, we study the possibility of generating atom–atom entanglement in terms of different initial states. Furthermore, we control the dynamics of atom–atom entanglement in different quantum Zeno regimes. To show its efficiency, we compare the entanglement dynamics under QZD to free evolution. We show that in comparison with free evolution of a system, QZD not only does restrict the dynamics in the subspace where the system is initially prepared, but also preserves entanglement.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The work is a theoretical study and it doesn’t need any experimental data, therefore there is no external data associated with the manuscript.]

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Acknowledgements

We would like to thank Babak Dastmalchi for several useful discussions.

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Authors and Affiliations

  1. Department of Physics, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran

    M. A. Fasihi, M. Khanzadeh, P. Hasanzadeh & S. Ebrahimi Asl

Authors
  1. M. A. Fasihi
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  2. M. Khanzadeh
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  3. P. Hasanzadeh
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  4. S. Ebrahimi Asl
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Correspondence to M. A. Fasihi.

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Fasihi, M.A., Khanzadeh, M., Hasanzadeh, P. et al. Protecting the entanglement of two interacting atoms in a cavity by quantum Zeno dynamics. Eur. Phys. J. D 75, 160 (2021). https://doi.org/10.1140/epjd/s10053-021-00168-7

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