Single-mode nonlinear excited entangled coherent states and their nonclassical properties

E-ISSN： 1402-4896|90|1|15101-15114

ISSN： 1402-4896

Source： Physica Scripta, Vol.90, Iss.1, 2015-01, pp. : 15101-15114

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Abstract

In this paper, after a brief review of the single-mode excited entangled coherent states, two new classes of continuous-variable entangled pure states, namely, single-mode nonlinear excited entangled coherent states, have been produced by using the f-deformed creation operator &$f(n){{a}^{dagger }}$; instead of &${{a}^{dagger }}$;. In order to establish the nonclassicality of the states, some of the physical properties of the corresponding entangled states, such as entanglement degree, photon statistics, second-order correlation function and quadrature squeezing have been studied in detail by choosing a particular f-deformation function. In addition, the influence of photon excitations on the properties of our introduced states has been analyzed and the results compared with those of a single-mode excited entangled coherent state. In continuation, a theoretical scheme for their generation based on the interaction of a two-level atom with a quantized cavity field has been proposed.