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

Dynamical behavior of atom–photon entanglement for a four-level atom near the band edge of a... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

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

Sahrai, M.; Boroojerdi, V.
Quantum Information Processing, Volume 16 (6) – Apr 18, 2017
13 pages
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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-017-1590-2
Publisher site
See Article on Publisher Site

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.

Journal

Quantum Information Processing – Springer Journals

Published: Apr 18, 2017

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