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arXiv:1101.2058 · Physica A Statistical Mechanics and its Applications

Generalized coherent states for solvable quantum systems with degenerate discrete spectra and their nonclassical properties

Gholamreza Honarasa, Mohammad Kazem Tavassoly, Mohsen Hatami, R. Roknizadeh

Published Dec 9, 2010• 15 citations
arXivHTMLPDF
DOI
10.1016/j.physa.2010.10.049

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In this paper, we will present a general formalism for constructing the nonlinear charge coherent states which in special case lead to the standard charge coherent states. The su Q(1, 1) algebra as a nonlinear deformed algebra realization of the introduced states is established. In addition, the corresponding even and odd nonlinear charge coherent states have also been introduced. The formalism has the potentiality to be applied to systems either with known "nonlinearity function" f(n) or solvable quantum system with known "discrete nondegenerate spectrum" en. As some physical appearances, a few known physical systems in the two mentioned categories have been considered. Finally, since the construction of nonclassical states is a central topic of quantum optics, nonclassical features and quantum statistical properties of the introduced states have been investigated by evaluating single- and two-mode squeezing, su (1, 1)-squeezing, Mandel parameter and antibunching effect (via g-correlation function) as well as some of their generalized forms we have introduced in the present paper.