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We have investigated in the time-evolution and the squeezing character of atomic operators in a system of two-mode squeezed vacuum field interacting with a two-level atom without the rotating-wave approximation by means of quantum theory.The results obtained using the numerical method indicate that the influence of the virtual-photon field on the atomic quantum character is mainly the cause for quantum chaos which is related to the quantum character of the system itself.
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Keywords:
- virtual-photon field, two-mode squeezed vacuum field, two-level atom, particle's occupancy, atomic dipole squeezing /
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