On the non-classicality features of new classes of nonlinear coherent states

[摘要] In this paper using an exponential function of intensity of radiation field two new classes of nonlinear coherent states will be constructed For the first class we choose the nonlinearity function as f(beta)(n) = exp(beta n) where beta characterizes the strength of the nonlinearity of the quantum system We show that the corresponding states possess a collection of non-classicality features only for the particular values of beta and z But interestingly there exists finite (threshold) values of beta for which all of the non-classicality signs will disappear in appropriate regions around the origin of the complex plane (z

[发布日期] 2010-12-15

[关键词] Nonlinear coherent slate;Non classical state;Canonical coherent state