Poisson-Vlasov: stochastic representation and numerical codes |
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Authors: | E Floriani R Lima R Vilela Mendes |
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Institution: | (1) Department of Physics, Islamic Azad University - Shahreza Branch, Shahreza, Isfahan, Iran;(2) Quantum Optics Group, Department of Physics, University of Isfahan, Isfahan, Iran |
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Abstract: | In this paper, we examine the effects of the
gravitational field on the dynamical evolution of the cavity-field
entropy and the creation of the Schr?dinger-cat state in the
Jaynes-Cummings model. We consider a moving two-level atom
interacting with a single mode quantized cavity-field in the
presence of a classical homogeneous gravitational field. Based on
an
su(2) algebra, as the dynamical symmetry group of the model, we derive the reduced density operator of the cavity-field
which includes the effects of the atomic motion and the gravitational field. Also, we obtain the exact solution and the approximate
solution for the system-state vector, and examine the atomic dynamics. By considering the temporal evolution of the
cavity-field entropy as well as the dynamics of the Q-function of the cavity-field we study the effects of the gravitational
field on the generation of the Schr?dinger-cat states of the cavity-field by using the Q-function,
field entropy and approximate solution for the system-state vector. The results show that the
gravitational field destroys the generation of the Schr?dinger-cat state of the cavity-field. |
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Keywords: | PACS" target="_blank">PACS 52 20 -j Elementary processes in plasmas 52 65 Ff Fokker-Planck and Vlasov equation 05 10 Gg Stochastic analysis methods |
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