Geodesic
Dynamics of two-level atoms interacting with thermal field for entangled initial atomic states
Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 6 (2015), pp. 151-160

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In this paper the entanglement dynamics for system of two two-level atoms interacting with a mode of thermal electromagnetic field in lossless cavity has been investigated. Initial atomic states are the entangled Bell type states. Using the full set of eigenvectors of the Hamiltonian of the considered model we have derived the exact solution for the density matrix for the whole system. On its basis the reduced atomic density matrix and Peres–Horodetcki parameter have been calculated. Calculating of entanglement parameter shows the possibility of high degree of entanglement even for large intensity of thermal field. Thus there is a possibility of maintenance and control over the degree of entanglement.
Keywords: two-level atoms, thermal field, lossless cavity, atomic coherence, atomic density matrix.
Mots-clés : dipole-dipole interaction, one-photon transitions, entanglement 
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     author = {E. K. Bashkirov and A. S. Solovieva and M. S. Mastyugin},
     title = {Dynamics of two-level atoms interacting with thermal field for entangled initial atomic states},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {151--160},
     publisher = {mathdoc},
     number = {6},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2015_6_a20/}
}
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E. K. Bashkirov; A. S. Solovieva; M. S. Mastyugin. Dynamics of two-level atoms interacting with thermal field for entangled initial atomic states. Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, no. 6 (2015), pp. 151-160. http://geodesic.mathdoc.fr/item/VSGU_2015_6_a20/