Photon statistics and squeezing in the two-atom thermal Jaynes-Cummings model

The behavior of the mean photon number, photon number variance and field sq ueezing is investigated for the two two-level atoms prepared in a multiatom squeezed state coupled to the vacuum or thermal field. The value of superp osition angle (theta) of the atomic states is found to affect the photon nu mber variance as well as field squeezing. The bound on the sun-Poissonian f ield concerning the value of theta and input mean photon number is determin ed. One of the field quadrature is found to exhibit permanent squeezing for the vacuum input in a small range of the value of theta. It is shown that the input thermal photons degrade the sub-Poissonian character and spontane ous squeezing. However, a considerable amount of squeezing is obtained even in the presence of thermal photons.