Speaker
Dr
Friedemann Queisser
(Helmholtz-Zentrum Dresden-Rossendorf)
Description
We study the enhancement of tunneling through a potential barrier by a time-dependent electric field with special emphasis on pulse-shaped vector potentials. In addition to the known effects of preacceleration and potential deformation already present in the adiabatic regime, as well as energy mixing in analogy to the Franz-Keldysh effect in the nonadiabatic (impulse) regime, the pulse can enhance tunneling by “pushing” part of the wave function out of the rear end of the barrier. These findings could be relevant for nuclear fusion or applications in condensed matter an atomic physics.
Primary author
Dr
Friedemann Queisser
(Helmholtz-Zentrum Dresden-Rossendorf)
