Decoherence of cooled and trapped polariton under magnetic field

An interaction between matter and light remains the most important physical mechanism which open path to explore the fundamental principles of quantum mechanics. In this paper, the dynamical behavior of the system of cooled and trapped polariton is studied. In particular, we analytically and numerically studied decoherence in a system of cooled polariton under the influence of a magnetic trap by evaluating physical parameters such as force and its corresponding torque, transition probability of founding the system in the excited state and energy. It's shown that an introduction of magnetic field in the system as a trap increases considerably the total energy of the system. In the same manner, we investigated the total entropy of the system and evaluated its entanglement. We showed that, the system reaches asymptotic values of entanglement of 0.37 after some fluctuations, meaning that the magnetic field reduces considerably decoherence in the system.