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Entanglement of effectively coupled three atoms

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Journal of Contemporary Physics (Armenian Academy of Sciences) Aims and scope

Abstract

For investigation of entanglement and thermodynamic properties of three coupled atoms the Dicke model is considered in the dispersive limit. Two qualitatively different regions differing in the sign of the effective coupling constant are shown. The vacuum induced Stark shift modifies strongly the physical results in these regions. In the region of negative coupling constant entanglement is more prominent: it is displayed in a wider range of temperature and atomic transition frequencies. Also the critical temperatures and the atomic transition frequencies corresponding to vanishing of entanglement are studied.

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Authors and Affiliations

  1. Institute for Physical Research, NAS of Armenia, Ashtarak, Armenia Laboratoire Interdisciplinaire Carnot de Bourgogne, Université de Bourgogne, France A.I. Alikhanian National Scientific Laboratory, Yerevan, Armenia

    L. A. Chakhmakhchyan

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  1. L. A. Chakhmakhchyan
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Correspondence to L. A. Chakhmakhchyan.

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Original Russian Text © L. A. Chakhmakhchyan, 2013, published in Izvestiya NAN Armenii, Fizika, 2013, Vol. 48, No. 5, pp. 295–304.

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Chakhmakhchyan, L.A. Entanglement of effectively coupled three atoms. J. Contemp. Phys. 48, 193–199 (2013). https://doi.org/10.3103/S1068337213050010

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  • DOI: https://doi.org/10.3103/S1068337213050010

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