• DOI:10.1103/PhysRevA.101.053805
• Corpus ID: 203610573

Population inversion and entanglement in single and double glassy Jaynes-Cummings models

@article{Ghoshal2020PopulationIA,
  title={Population inversion and entanglement in single and double glassy Jaynes-Cummings models},
  author={Ahana Ghoshal and Sreetama Das and Aditi Sen(De) and Ujjwal Sen},
  journal={Physical Review A},
  year={2020},
  volume={101},
  pages={053805}
}

• A. Ghoshal, Sreetama Das, +1 author U. Sen
• Published 1 October 2019
• Physics
• Physical Review A

We find that a suppression of the collapse and revival of population inversion occurs in response to insertion of Gaussian quenched disorder in atom-cavity interaction strength in the Jaynes-Cummings model. The character of suppression can be significantly different in the presence of non-Gaussian disorder, which we uncover by studying the cases when the disorder is uniform, discrete, and Cauchy-Lorentz. Interestingly, the quenched averaged atom-photon entanglement keeps displaying nontrivial oscillations even after the population inversion has been suppressed. Subsequently, we show that disorder in atom-cavity interactions helps to avoid sudden death of atom-atom entanglement in the double Jaynes-Cummings model. We identify the minimal disorder strengths required to eliminate the possibility of sudden death. We also investigate the response of entanglement sudden death in the disordered double Jaynes-Cummings model in the presence of atom-atom coupling.