Production of large Bose-Einstein condensates in a magnetic-shield-compatible hybrid trap

Abstract

We describe the production of large ${}^{23}\mathrm{Na}$ Bose-Einstein condensates in a hybrid trap characterized by a weak magnetic field quadrupole and a tightly focused infrared beam. The use of small magnetic field gradients makes the trap compatible with the state-of-the-art magnetic shields. By taking advantage of the deep cooling and high efficiency of gray molasses to improve the initial trap loading conditions, we produce condensates composed of as much as $7$ million atoms in less than $30\mathrm{s}$.

arXiv comment8 pages, 3 figures

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• Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid
• A Sideband-Enhanced Cold Atomic Source For Optical Clocks
• Design and characterisation of a compact magnetic shield for ultracold atomic gas experiments
• Ferromagnetism in an extended coherently-coupled atomic superfluid
• Manipulation of an elongated internal Josephson junction of bosonic atoms
• Mesoscopic quantum superposition states of weakly-coupled matter-wave solitons
• Progress toward a zero-magnetic-field environment for ultracold-atom experiments
• Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates
• Efficient production of sodium Bose-Einstein condensates in a hybrid trap
• Ultracold high-spin $\Sigma$-state polar molecules for new physics searches