[en] We show that the interband dynamics in a tilted two-band Bose-Hubbard model can be reduced to an analytically accessible spin model in the case of resonant interband oscillations. This allows us to predict the revival time of these oscillations which decay and revive due to inter-particle interactions. The presented mapping onto the spin model and the so achieved reduction of complexity has interesting perspectives for future studies of many-body systems.
Disciplines :
Physics
Author, co-author :
Plötz, Patrick
Schlagheck, Peter ; Université de Liège - ULiège > Département de physique > Physique quantique statistique
Wimberger, Sandro
Language :
English
Title :
Effective spin model for interband transport in a Wannier-Stark lattice system
Publication date :
2011
Journal title :
European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics
ISSN :
1434-6060
eISSN :
1434-6079
Publisher :
Springer Science & Business Media B.V., New York, United States - New York
Special issue title :
Hybrid quantum systems – new perspectives on quantum state control
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