Wang, Daw-WeiLukin, MikhailDemler, Eugene2016-08-242004Wang, Daw-Wei, Mikhail D. Lukin, and Eugene Demler. 2004. “Disordered Bose-Einstein Condensates in Quasi-One-Dimensional Magnetic Microtraps.” Physical Review Letters 92 (7) (February 18). doi:10.1103/physrevlett.92.076802.0031-9007http://nrs.harvard.edu/urn-3:HUL.InstRepos:27899433We analyze the effects of a random magnetic potential in a microfabricated waveguide for ultracold atoms. We find that the shape and position fluctuations of a current carrying wire induce a strong Gaussian correlated random potential with a length scale set by the atom-wire separation. The theory is used to explain quantitatively the observed fragmentation of the Bose-Einstein condensates in atomic waveguides. Furthermore, we show that nonlinear dynamics can be used to provide important insights into the nature of the strongly fragmented condensates. We argue that a quantum phase transition from the superfluid to the insulating Bose glass phase may be reached and detected under the realistic experimental conditions.en-USJournal Article2016-08-2410.1103/physrevlett.92.076802