Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 58: Quantum Gases: Lattices II
Q 58.8: Vortrag
Freitag, 12. März 2010, 12:15–12:30, E 001
Dynamics and stability of Bose-Einstein solitons in tilted optical lattices — •Christopher Gaul1, Cord A. Müller1, Elena Díaz2, Rodrigo Lima3, and Francisco Domínguez-Adame2 — 1Physikalisches Institut, Universität Bayreuth, Deutschland — 2GISC, Departamento de Física de Materiales, Universidad Complutense, E-28040 Madrid, Spain — 3Instituto de Física, Universidade Federal de Alagoas, Maceió AL 57072-970, Brazil
We consider a BEC whose mean-field interaction parameter g(t) is modulated harmonically in time via Feshbach-resonance techniques. When the 1d lattice is tilted, the BEC wave packet starts to perform Bloch oscillations. We show that for suitable choices of g(t), these Bloch oscillations are stable [1]. Moreover, solitonic wave packets can be effectively stabilized against certain experimentally relevant perturbations [2].
[1] Gaul et al. PRL 102, 255303 (2009)
[2] Díaz et al. arXiv:0911.5633 (2009)