Wannier-Stark states of a quantum particle in 2D lattices.
A simple method of calculating the Wannier-Stark resonances in 2D lattices is suggested. Using this method we calculate the complex Wannier-Stark spectrum for a nonseparable 2D potential realized in optical lattices and analyze its general structure. The dependence of the lifetime of Wannier-Stark states on the direction of the static field (relative to the crystallographic axis of the lattice) is briefly discussed.
Glück
M
M
Fachbereich Physik, Universität Kaiserslautern, D-67653 Kaiserslautern, Germany.
Keck
F
F
Kolovsky
A R
AR
Korsch
H J
HJ