SU(1,1) Nonlinear Coherent States

TL;DR

This paper generalizes nonlinear coherent states to the SU(1,1) Lie group, introducing a broad class of states with resolution of identity, temporal stability, and nonclassical properties like squeezing and sub-Poissonian statistics.

Contribution

The paper extends nonlinear coherent states to SU(1,1), providing a unified framework that includes known states and exhibits nonclassical features.

Findings

States include Klauder-Perelomov and Barut-Girardello coherent states

States exhibit squeezing and anti-bunching effects

States have sub-Poissonian statistics

Abstract

The idea of construction of the nonlinear coherent states based on the hypergeometric- type operators associated to the Weyl-Heisenberg group [J:P hys:A 45(2012) 095304], are generalized to the similar states for the arbitrary Lie group SU(1, 1). By using of a discrete, unitary and irreducible representation of the Lie algebra su(1, 1) wide range of generalized nonlinear coherent states(GNCS) have been introduced, which admit a resolution of the identity through positive definite measures on the complex plane. We have shown that realization of these states for different values of the deformation pa- rameters r = 1 and 2 lead to the well-known Klauder-Perelomov and Barut-Girardello coherent states associated to the Irreps of the Lie algebra su(1, 1), respectively. It is worth to mention that, like the canonical coherent states, GNCS possess the temporal stability property. Finally, studying some statistical characters implies that they have indeed nonclassical features such as squeezing, anti-bunching effect and sub-Poissonian statistics, too.