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

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  • Bose-Einstein condensates
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Abstract

We report an apparatus and method capable of producing Bose-Einstein condensates (BECs) of ∼1 × 106 87Rb 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.

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Authors and Affiliations

  1. Department of Physics, Durham University, Rochester Building, Science Laboratories, South Road, DH1 3LE, Durham, UK

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

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  1. D. L. Jenkin
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  2. D. J. McCarron
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  3. M. P. Köppinger
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  4. H. W. Cho
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  5. S. A. Hopkins
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  6. S. L. Cornish
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Correspondence to D. L. Jenkin.

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Jenkin, D.L., McCarron, D.J., Köppinger, M.P. et al. Bose-Einstein condensation of 87Rb in a levitated crossed dipole trap. Eur. Phys. J. D 65, 11–18 (2011). https://doi.org/10.1140/epjd/e2011-10720-5

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  • DOI: https://doi.org/10.1140/epjd/e2011-10720-5

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