Strong-field Stark effect

K. F. Grebenkin, L. P. Rapaport

F. O. Aleksandrov, Alexander Ya. Kazakov, P. J. Shepherd

Mikhail Vladimirovich Fedorov

An analysis is made of the Stark effect in a hydrogen atom subjected to a static electric field and the field of a strong resonant electromagnetic wave. It is shown that the resonant interaction modifies the linear (with respect to the static field intensity) splitting of the atomic levels and gives rise to a quadratic shift of sublevels.

V. T. Bykovskii, Yu. S. Oseledchik, V. G. Khaladzhi

Yuying An

Using the joint physical model consisted of many two-level atoms and single-mode light fields, the evolution of the system state voter and the numerical results of the entanglement degree for the entangled light field in the presence of Stark effect are presented. The influence of the Stark effect and intensity of the initial fields on transfer of quantum entangled information are studied. It is found that quantum entanglement information can be transferred between the cavity fields and atoms under the certain conditions in order to realize transfer of quantum entangled information. The effects of Stark shift and intensity in the initial fields on the process are obvious. The entangled degree of light field increases with intensity of the initial field increase. The collapses and revivals of entangled degree appears when the initial fields are strong. The greater the stark shift parameter is, the faster the oscillation of the entangled degree of light fields will be. This shows that the Stark effect destroys the steady properties of entangled degree of light fields.