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Title: Quantum teleportation and information transfer in the system of two resonant atoms
Authors: Лазур, Володимир Юрійович
Рейтій, Олександр Костянтинович
Мигалина, Світлана Іванівна
Павлик, Ольга Федорівна
Keywords: Квантова телепортація, квантова електродинаміка, оператор Брейта, релятивістські ефекти, міжелектронна взаємодія, квантовий комп'ютер, дворівневий атом
Issue Date: 2014
Publisher: Інститут експериментальний фізики Словацької академії наук
Citation: Lazur V.Yu., Reity O.K., Myhalyna S.I., Pavlyk O.F. Quantum teleportation and information transfer in the system of two resonant atoms // Proceedings of the 16th Small Triangle Meeting (October 5-8, 2014, Ptičie, Slovakia). – Ptičie. – 2014. – P. 100-111.
Abstract: The resonance transfer of quantum information from one two-level atom to another that is at an arbitrary distance from the former one is investigated. The symmetric $\Psi_s$ and antisymmetric $\Psi_a$ states of the two-atom system are considered taking into account dipole-dipole interaction between atoms of this system. The closed-form analytical expressions for shifts and widths of the considered collective states $\Psi_{s(a)}$ of two identical two-level atoms located at an arbitrary distance from each other. In the quite general considerations the system of nonstationary equations describing separately evolution of states amplitudes of the compound-system ``$A(1)$ atom+$A(2)$ atom+field'' in symmetric and antisymmetric channels at absorption of a photon by one of the compound-system atoms. Three cases of the obtained solutions for amplitudes of possible states of the compound-system at resonance and nonresonance absorption of a photon are considered. It has been shown that when atoms are at an infinite distance from one another, so that there is no dipole-dipole interaction of atoms, quantum information can be transferred from one atom to another with a characteristic time considerably shorter than the time it takes for a photon to cover the interatomic distance. This effect is referred to as the effect of quantum teleportation in a system of resonance atoms.
Type: Text
Publication type: Стаття
Appears in Collections:Наукові публікації кафедри диференціальних рівнянь та математичної фізики

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