Influence of nonlinear quantum dissipation on the dynamical
properties of the f-deformed Jaynes-Cummings model in the dispersive limit |
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Authors: | M H Naderi M Soltanolkotabi |
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Institution: | (1) Quantum Optics Group, Department of Physics, University of Isfahan, Isfahan, Iran |
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Abstract: | We investigate the effect of a static electric field on
photoionization of the He atom in the ground 1S and low-lying 2S
and 2P excited states. The field-affected ionization potential and
photoionization cross-section are determined from the complex
eigenvalues of the time-dependent Schr?dinger equation solved by the
complex rotation method in the Floquet ansatz. Accuracy of the method
is enhanced by the use of the Hylleraas basis set. For the ground
state of helium, we find that the total photoionization cross-section
remains constant or decreases as a function of the DC field strength
until this field reaches a certain critical value. For the low-lying
excited states, effect of the static field is similar to the ordinary
DC Stark effect. |
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Keywords: | 32 80 -t Photon interactions with atoms 32 80 Fb Photoionization of atoms and ions 42 50 Hz Strong-field excitation of optical transitions in quantum systems multiphoton processes dynamic Stark shift |
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