PUMPING 2 DILUTE-GAS BOSE-EINSTEIN CONDENSATES WITH RAMAN LIGHT-SCATTERING

We propose an optical method for increasing the number of atoms in a p air of dilute-gas Bose-Einstein condensates. The method uses laser-dri ven Raman transitions which scatter atoms between the condensate and n oncondensate atom fractions. For a range of condensate phase differenc es there is destructive quantum interference of the amplitudes for sca ttering atoms out of the condensates. Because the total atom scatterin g rate into the condensates is unaffected, the condensates grow.