Physics
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phrva..53.1715k&link_type=abstract
Physical Review A (Atomic, Molecular, and Optical Physics), Volume 53, Issue 3, March 1996, pp.1715-1724
Physics
27
Multiphoton Ionization And Excitation To Highly Excited States, Strong-Field Excitation Of Optical Transitions In Quantum Systems, Multiphoton Processes, Dynamic Stark Shift, Celestial Mechanics
Scientific paper
We present an analytic theory of three-dimensional Trojan (stable nonspreading) wave packets. The theory is valid beyond the harmonic approximation presented previously. We show that electron wave packets that are both radially and angularly well localized can be generated from an angularly completely delocalized state (a circular Rydberg state) by adiabatic switching of a circularly polarized electric field. Confinement of the Rydberg electron results from the suppression of the nonlinearity of the Coulomb spectrum, the same nonlinearity that is responsible for wave-packet spreading and revivals in the absence of the applied field. A comparison with the harmonic approach is also presented, as well as the results of numerical experiments based on integration of the time-dependent and field-dependent Schrödinger equation for the electron.
Eberly Joseph H.
Kalinski Maciej
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