Bose-Einstein condensation of 87Rb in a levitated crossed dipole trap

Jenkin, D.L.; McCarron, D.J.; Koppinger, M.P.; Cho, H.W.; Hopkins, S.A.; Cornish, S.L.

Abstract

We report an apparatus and method capable of producing Bose-Einstein condensates (BECs) of ∼1 × 10687Rb atoms, and ultimately designed for sympathetic cooling of 133Cs and the creation of ultracold RbCs molecules. The method combines several elements: (i) the large recapture of a magnetic quadrupole trap from a magneto-optical trap; (ii) efficient forced RF evaporation in such a magnetic trap; (iii) the gain in phase-space density obtained when loading the magnetically trapped atoms into a far red-detuned optical dipole trap, and (iv) efficient evaporation to BEC within the dipole trap. We demonstrate that the system is capable of sympathetically cooling the |F = 1, mF = −1〉 and |1,0⟩ sublevels with |1, +1〉 atoms. Finally we discuss the applicability of the method to sympathetic cooling of 133Cs with 87Rb.

Citation

Jenkin, D., McCarron, D., Koppinger, M., Cho, H., Hopkins, S., & Cornish, S. (2011). Bose-Einstein condensation of 87Rb in a levitated crossed dipole trap. The European Physical Journal D, 65(1-2), 11-18. https://doi.org/10.1140/epjd/e2011-10720-5

• Journal Article Type: Article
• Publication Date: Nov 1, 2011
• Deposit Date: Jan 23, 2012
• Publicly Available Date: Apr 12, 2013
• Journal: European Physical Journal D
• Print ISSN: 1434-6060
• Electronic ISSN: 1434-6079
• Publisher: Springer
• Peer Reviewed: Peer Reviewed
• Volume: 65
• Issue: 1-2
• Pages: 11-18
• DOI: https://doi.org/10.1140/epjd/e2011-10720-5
• Public URL: https://durham-repository.worktribe.com/output/1529672