Enhancing Bipartite Entanglement of Opto-electromechanical System Assisted by Three Level Laser

Abstract

In this research, the theoretically bipartite entanglement dynamics in an opto-electromechanical system with a degenerate three-level laser were studied. The system consists of a microwave cavity, optical cavity, mechanical resonator, and a degenerate three-level atom within the optomechanical arrangement. To this aim, we constructed the model Hamiltonian for the system. The system’s dynamics have been determined using the nonlinear quantum-Langevin equations. By applying the linearization approximation, the bipartite entanglement can be assessed through the logarithmic negativity. The results showed that the entanglement in an opto-electromechanical system is enhanced by degenerate three-level atoms compared to a standard opto-electromechanical system. Interestingly, we observed that as the coupling rate g is increased, the entanglement between optical cavity-three level laser against normalized optical cavity detuning also increases. In addition our study suggested that the entanglement between each subsystem increases as the atom injection rate increases because the larger number of atoms injection rate leads to a more laser emission. Moreover, we showed that as temperature increases, particles in the environment have more thermal energy and are more likely to interact with the particles in the system. This increased interaction leads to a decrease in entanglement between the subsystems, as their states become more independent due to the influence of the environment.