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Dynamical behavior of atom–photon entanglement for a four-level atom near the band edge of a 3D-anisotropic photonic crystal

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Abstract

Time evolution of the entanglement between a four-level atom near the band edge of a photonic crystal and its spontaneous emission field is investigated. It is shown that the quantum entropy has a faster oscillator behavior as the upper levels move further into the band gap. Entanglement oscillations can be controlled by the intensity and the detuning of the coupling field. An enhanced entanglement is achieved in the presence of quantum interference resulting from the two possible decay channels. In addition, the atom–photon entanglement will be influenced noticeably by the reservoir coupling constant, intensity of coupling field, and the detuning.

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Authors and Affiliations

  1. Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran

    M. Sahrai & V. Tahmoorian Askari Boroojerdi

  2. Aras International Campus, University of Tabriz, Tabriz, Iran

    M. Sahrai & V. Tahmoorian Askari Boroojerdi

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  1. M. Sahrai
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  2. V. Tahmoorian Askari Boroojerdi
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Correspondence to V. Tahmoorian Askari Boroojerdi.

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Sahrai, M., Boroojerdi, V.T.A. Dynamical behavior of atom–photon entanglement for a four-level atom near the band edge of a 3D-anisotropic photonic crystal. Quantum Inf Process 16, 145 (2017). https://doi.org/10.1007/s11128-017-1590-2

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