Free expansion of a Bose-Einstein condensate in a 1D optical lattice

Details Free expansion of a Bose-Einstein condensate in a 1D optical lattice Free expansion of a Bose-Einstein condensate in a 1D optical lattice

2002-04-24

arxiv.org/abs/cond-mat/0204528v2

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 figures. Revised version (error bars in figure 5, additional references)

Scientific paper

10.1103/PhysRevA.66.021601

We have experimentally investigated the free expansion of a Bose-Einstein condensate in an array of two-dimensional traps created by a one-dimensional optical lattice. If the condensate held in a magnetic trap is loaded adiabatically into the lattice, the increase in chemical potential due to the additional periodic potential is reflected in the expansion of the condensate after switching off the magnetic trap. We have calculated the chemical potential from measurements of the transverse expansion of the condensate as a function of the lattice parameters.

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