Trapping of ultracold atoms in a magnetic lattice

This dissertation presents the realization of a periodic array of Bose-Einstein condensates in a magnetic lattice consisting of an array of magnetic microtraps. Bose-Einstein condensation occurs when atoms confined in the magnetic microtraps are cooled to sufficiently low temperature that they all occupy the lowest quantum state of the traps. Evidence for the onset of Bose-Einstein condensation in multiple sites of the magnetic lattice is provided by radiofrequency spectroscopy. The realization of a periodic array of Bose-Einstein condensates in a magnetic lattice represents a major step towards the implementation of magnetic lattices to simulate exotic phenomena in lattices of complex geometry in materials science.