Large magnetic storage ring for Bose-Einstein condensates

Arnold, A.S. and Garvie, C.S. and Riis, E. (2006) Large magnetic storage ring for Bose-Einstein condensates. Physical Review A, 73 (4). 041606(R). ISSN 1094-1622

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Abstract

Cold atomic clouds and Bose-Einstein condensates have been stored in a 10cm diameter vertically oriented magnetic ring. An azimuthal magnetic field enables low-loss propagation of atomic clouds over a total distance of 2m, with a heating rate of less than 50nK/s. The vertical geometry was used to split an atomic cloud into two counter-rotating clouds which were recombined after one revolution. The system will be ideal for studying condensate collisions and ultimately Sagnac interferometry.