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Entanglement between qubits due to the atomic coherence
E.K. Bashkirov, D.V. Litvinova

 

Samara State University

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Full text of article: Russian language.

DOI: 10.18287/0134-2452-2014-38-4-663-669

Pages: 663-669.

Abstract:
We have investigated the influence of dipole-dipole interaction and initial atomic coherence on the dynamics of two-qubit entanglement. We have considered a model, in which only one atom couples to a quantum electromagnetic field in a finite-Q cavity, since one of them can freely move outside the cavity. We have shown the possibility of disappearance of the entanglement sudden death effect and stabilization of atomic entanglement in the presence of the dipole interaction of qubits.

Key words:
two-qubit system, atom-atom entanglement, atomic coherence, dipole-dipole interaction, Peres-Horodeсki сriterion, entanglement sudden death.

Citation:
Bashkirov EK, Litvinova DV. Entanglement between qubits due to the atomic coherence. Computer Optics 2014; 38(4): 663-669. DOI: 10.18287/0134-2452-2014-38-4-663-669.

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