Diffraction of a Bose-Einstein condensate from a Magnetic Lattice on a Micro Chip
arXiv:cond-mat/0504210 · doi:10.1103/PhysRevLett.95.170405
Abstract
We experimentally study the diffraction of a Bose-Einstein condensate from a magnetic lattice, realized by a set of 372 parallel gold conductors which are micro fabricated on a silicon substrate. The conductors generate a periodic potential for the atoms with a lattice constant of 4 microns. After exposing the condensate to the lattice for several milliseconds we observe diffraction up to 5th order by standard time of flight imaging techniques. The experimental data can be quantitatively interpreted with a simple phase imprinting model. The demonstrated diffraction grating offers promising perspectives for the construction of an integrated atom interferometer.
4 pages, 4 figures
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