Entanglement and non-classical properties of nonlinear supercoherent states

Abstract

Recently, nonlinear supercoherent states are introduced in three classes: degenerate, singular and generic. In this paper the entanglement, squeezing and the statistical properties of these states will be studied. Making these states as two qubits states and using concurrence their entanglement is calculated. In addition, to study the statistical properties, we used Mandel parameter. The results show that the singular nonlinear supercoherent states are separable while, the degenerate and generic classes may be entangled. Moreover, singular nonlinear supercoherent states are always squeezed in Xˆ1 with sub-Poissonian statistics for all values of coherency parameter. However, for the degenerate and generic classes, squeezing and sub-Poissonian statistics are observed for some values of parameters.