The generation and properties of new classes of multipartite entangled coherent squeezed states in a conducting cavity

Recently the quantum description of electromagnetic waves in conducting media has been performed. It has been deduced that, in particular situations the Hamiltonian of corresponding field can be expressed by the well-known Caldirola-Kanai Hamiltonian. In this paper, using the associated annihilation and creation operators of the above-mentioned real physical system, a few schemes for the generation of some classes of time-dependent multipartite entangled coherent squeezed states are proposed. To achieve the purpose, the interaction of a narrow bunch of two-level atoms with such a quantized field in a conducting cavity and in the presence of a strong-driving classical field is taken into account. The influence of the conductivity parameter on the degree of entanglement and atomic population inversion is studied, numerically. As will be clarified, the related physical quantities can be controlled by the conductivity parameter. In detail, it is shown that the entanglement reaches to its maximum value with smaller delay in the presence of larger values of conductivity. Also, it is observed that by increasing the conductivity, the time for occurring collapse-revival in the atomic inversion is decreased.