Dr Sandro Wimberger
ITP, Heidelberg University, Germany
Friday, September 20th, 2013 at 12:00:00 PM
Conference room Querzoli - LENS - via Nello Carrara 1 - Sesto Fiorentino (Florence)
Published on-line at 04:25:11 PM on Wednesday, September 18th, 2013
Many-body dynamics of ultracold atoms in dissipative optical lattices
Modern quantum and atom-optical experiments allow for an unprecedented control of microscopic degrees of freedom, not just in the initialization but also in th
Modern quantum and atom-optical experiments allow for an unprecedented control of microscopic degrees of freedom, not just in the initialization but also in the coherent and incoherent evolution of quantum states. We focus on the dynamics of ultra-cold bosons in an optical lattice with controlled and localized dissipation [1-4]. For suitable initial states, strong dissipation can stabilize a Bose-Einstein condensate, such that it remains coherent even in the presence of strong interactions between its constituents. Using an exact unraveling of the underlying master equation for small systems and a semiclassical approach for large ones, we predict, in particular, the formation of stable and coherent macroscopic quantum states in the leaky lattice [3,4].
 D. Witthaut, F. Trimborn, and S. Wimberger, PRL 101, 200402 (2008)
 D. Witthaut, F. Trimborn, H. Hennig, G. Kordas, T. Geisel, and S. Wimberger,
PRA 83, 063608 (2011)
 G. Kordas, S. Wimberger, and D. Witthaut, EPL 100, 30007 (2012)
 G. Kordas, S. Wimberger, and D. Witthaut, PRA 87, 043618 (2013)
For further informations, please contact Prof. Giovanni Modugno.
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