Resonance Enhanced Tunneling

Sh. Matsumoto, M. Yoshimura

Carlo Sias, Alessandro Zenesini, Hans Lignier +4 more

We report on measurements of resonantly enhanced tunneling of Bose-Einstein condensates loaded into an optical lattice. By controlling the initial conditions of our system we were able to observe resonant tunneling in the ground and the first two excited states of the lattice wells. We also investigated the effect of the intrinsic nonlinearity of the condensate on the tunneling resonances.

S. Guérin, Hans Rudolf Jauslin

We apply the tools of adiabatic Floquet theory to study the control of population transfer and tunneling processes by strong laser pulses. We show how tunneling can be enhanced by intermediate resonant levels by choosing appropriate pulse parameters. We obtain complete tunneling in times that are much shorter than the bare tunneling time or the times obtained without intermediate levels.

Ciann‐Dong Yang

M. Ya. Azbel

This paper considers tunneling traversal time; tunneling through an alternating potential, its enhancement and its fractal (Hofstadter butterfly) and chaotic resonances; and Hartree liquid resonance tunneling and its (specifically quantum) instability and turbulence.