ELECTRONIC AND OPTICAL TUNNEL EFFECT

Ronald Pepino, J. COOPER, D. Z. Anderson +1 more

PAN SHAO-HUA, FENG SI-MIN, Cui Dafu +2 more

By means of a new formalism of the Kronig-Penney model developed recently, the third order nonlinear optical effect of intersubband transitions in superlattices is studied. It is shown that there is a general relation between optical saturation intensity and tunnel bandwidth. The physical mechanism of this relation is analyzed.

D K Roy

D. Ciampini, O. Morsch, E. Arimondo

Matter waves can be coherently and adiabatically loaded and controlled in strongly driven optical lattices. This coherent control is used in order to modify the modulus and the sign of the tunneling matrix element in the tunneling Hamiltonian. Our findings pave the way for studies of driven quantum systems and new methods for engineering Hamiltonians that are impossible to realize with static techniques.