Wannier-Stark states of a quantum particle in 2D lattices

Authors
Gluck, M Keck, F Kolovsky, AR Korsch, HJ
Citation
M. Gluck et al., Wannier-Stark states of a quantum particle in 2D lattices, PHYS REV L, 86(14), 2001, pp. 3116-3119
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
14
Year of publication
2001
Pages
3116 - 3119
Database
ISI
SICI code
0031-9007(20010402)86:14<3116:WSOAQP>2.0.ZU;2-0
Abstract
A simple method of calculating the Wannier-Stark resonances in 2D lattices is suggested. Using this method we calculate the complex Wannier-Stark spec trum for a nonseparable 2D potential realized in optical lattices and analy ze its general structure. The dependence of the lifetime of Wannier-Stark s tates on the direction of the static field (relative to the crystallographi c axis of the lattice) is briefly discussed.