TY - JOUR T1 - Distillable Entanglement between Photonic Coherent or Squeezed Distributions and a Two-Level Atom in a Damping Cavity TT - درهم تنیدگیِ تقطیرپذیر در سامانه ی اتم دوترازه و فوتون های همدوس یا چلانده در کاواک اتلافی JF - opsi JO - opsi VL - 23 IS - 0 UR - http://opsi.ir/article-1-1311-en.html Y1 - 2017 SP - 109 EP - 112 KW - atom-photon entanglement KW - cavity damping KW - master equation KW - photonic coherent distribution KW - photonic squeezed distribution. N2 - In the present study, the entanglement between photonic coherent or squeezed distributions and a two-level atom in a leaky cavity at zero temperature, is reported. To investigate the time evolution of atom-photon entanglement the master equation for the density matrix, in the secular approximation, is solved. We then proceed by partial transposing the analytical expressions so obtained to numerically compute the negativity as a function of time. Our results demonstrate that as the initial photon mean number increases, the atom-photon entanglement decays at a faster pace for the coherent distribution compared to the squeezed distribution. Moreover, it is shown that the degree of atom-photon entanglement is much higher and more stable for the squeezed distribution than that for the coherent one. A consequence of the latter is that the time intervals during which the atom-photon entanglement is distillable is longer for the squeezed distribution. The results of the present report are of great potential in forming maximal entangled states of atom-photon systems, through distillation. M3 ER -