Manipulating entanglement sudden death in two coupled two-level atoms interacting off-resonance with a radiation field: an exact treatment.

@article{Sadiek2019ManipulatingES,
  title={Manipulating entanglement sudden death in two coupled two-level atoms interacting off-resonance with a radiation field: an exact treatment.},
  author={Gehad Sadiek and Wiam Al-Drees and Mohab S. Abdallah},
  journal={Optics express},
  year={2019},
  volume={27 23},
  pages={
          33799-33825
        }
}
We study a model of two coupled two-level atoms (qubits) interacting off-resonance (at non-zero detuning) with a single mode radiation field. This system is of special interest in the field of quantum information processing (QIP) and can be realized in electron spin states in quantum dots or Rydberg atoms in optical cavities and superconducting qubits in linear resonators. We present an exact analytical solution for the time evolution of the system starting from any initial state. Utilizing… 

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