In this work we investigate the thermal entanglement between two-level atoms and photons in a nonlinear cavity. We consider intensity-dependent couplings and calculate the negativity, as a measure of atom-photon entanglement. The cavity is assumed to be at a temperature T, so that all number of photons, and at the same time, both atomic states, with definite probabilities, are present. We then demonstrate a condition under which the intensity-dependent coupling leads to entanglement. It is also shown that, as in the case of linear Jaynes- Cummings model, the thermal states of atoms and photons are never separable.
Keshavarz, A., & Golshan, M. M. (2011). Atom-Photon Thermal Entanglement in Nonlinear Jaynes-Cummings Models. Iranian Journal of Science, 35(3), 217-222. doi: 10.22099/ijsts.2011.2145
MLA
A. Keshavarz; M. M. Golshan. "Atom-Photon Thermal Entanglement in Nonlinear Jaynes-Cummings Models", Iranian Journal of Science, 35, 3, 2011, 217-222. doi: 10.22099/ijsts.2011.2145
HARVARD
Keshavarz, A., Golshan, M. M. (2011). 'Atom-Photon Thermal Entanglement in Nonlinear Jaynes-Cummings Models', Iranian Journal of Science, 35(3), pp. 217-222. doi: 10.22099/ijsts.2011.2145
VANCOUVER
Keshavarz, A., Golshan, M. M. Atom-Photon Thermal Entanglement in Nonlinear Jaynes-Cummings Models. Iranian Journal of Science, 2011; 35(3): 217-222. doi: 10.22099/ijsts.2011.2145
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