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3 2017, 23(9): 109-112 Back to browse issues page
Distillable Entanglement between Photonic Coherent or Squeezed Distributions and a Two-Level Atom in a Damping Cavity
Fatemeh Yadollahi 1, Roza Safaiee2, Mohammad Mehdi Golshan3
1- PHD studen
2- professor assistant
3- professor
Abstract:   (220 Views)

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.

Keywords: atom-photon entanglement, cavity damping, master equation, photonic coherent distribution, photonic squeezed distribution.
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Type of Study: Research | Subject: Special
Received: 2017/04/4 | Accepted: 2017/04/4 | Published: 2017/04/4
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Yadollahi F, Safaiee R, Golshan M M. Distillable Entanglement between Photonic Coherent or Squeezed Distributions and a Two-Level Atom in a Damping Cavity. 3. 2017; 23 (9) :109-112
URL: http://opsi.ir/article-1-1311-en.html
Volume 23, Number 9 (3-2017) Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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