Generating a Nonclassical Thermal State Via Number Operators

We study a nonclassical thermal state by repeatedly operating the number operator on normal thermal state. Then, we investigate the nonclassical features of this state according to the P -function, photon-number distribution, Mandel’s Q -parameter, second-order correlation function and negative Wigner distribution as well as squeezing properties. Our results show that this state presents nonclassical properties, such as sub-Poissonian statistics, anti-bunching effects and negative Wigner distribution, at low temperature with small parameter m , which is the number of times for the number operator operates on normal thermal state. However, the squeezing effect of this state is not found.