Wannier-Stark states of a quantum particle in 2D lattices |
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| Authors: | Glück M Keck F Kolovsky A R Korsch H J |
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| Institution: | Fachbereich Physik, Universit?t Kaiserslautern, D-67653 Kaiserslautern, Germany. |
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| Abstract: | 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. |
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