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Atom-Photon Thermal Entanglement in Nonlinear Jaynes-Cummings Models | ||
| Iranian Journal of Science | ||
| مقاله 6، دوره 35، شماره 3، آبان 2011، صفحه 217-222 اصل مقاله (302.83 K) | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2011.2145 | ||
| نویسندگان | ||
| A. Keshavarz؛ M. M. Golshan* | ||
| Physics Department, College of Sciences, Shiraz University, Shiraz 71454, Iran | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| Thermal entanglement؛ atom-photon؛ nonlinear Jaynes-Cummings | ||
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