The European Physical Journal D

, Volume 65, Issue 1–2, pp 125–131 | Cite as

A high phase-space density mixture of 87Rb and 133Cs: towards ultracold heteronuclear molecules

  • H. W. Cho
  • D. J. McCarron
  • D. L. Jenkin
  • M. P. Köppinger
  • S. L. Cornish
Regular Article Cold and ultracold molecules

Abstract

We report the production of a high phase-space density mixture of 87Rb and 133Cs atoms in a levitated crossed optical dipole trap as the first step towards the creation of ultracold RbCs molecules via magneto-association. We present a simple and robust experimental setup designed for the sympathetic cooling of 133Cs via interspecies elastic collisions with 87Rb. Working with the |F = 1,mF = +1〉 and the |3, +3〉 states of 87Rb and 133Cs respectively, we measure a high interspecies three-body inelastic collision rate ∼10−25−10−26 cm6   s−1 which hinders the sympathetic cooling. Nevertheless by careful tailoring of the evaporation we can produce phase-space densities near quantum degeneracy for both species simultaneously. In addition we report the observation of an interspecies Feshbach resonance at 181.7(5) G and demonstrate the creation of Cs2 molecules via magneto-association on the 4(g)4 resonance at 19.8 G. These results represent important steps towards the creation of ultracold RbCs molecules in our apparatus.

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References

  1. 1.
    L.D. Carr, D. DeMille, R.V. Krems, J. Ye, New J. Phys. 11, 055049 (2009)ADSCrossRefGoogle Scholar
  2. 2.
    T. Zelevinsky, S. Kotochigova, J. Ye, Phys. Rev. Lett. 100, 043201 (2008)ADSCrossRefGoogle Scholar
  3. 3.
    R.V. Krems, Phys. Chem. Chem. Phys. 10, 4079 (2008)CrossRefGoogle Scholar
  4. 4.
    G. Pupillo, A. Micheli, H.P. Büchler, P. Zoller, Cold molecules: Theory, experiment, applications (CRC Press, Boca Raton, 2009), Chap. 12Google Scholar
  5. 5.
    A.V. Avdeenkov, M. Kajita, J.L. Bohn, Phys. Rev. A 73, 022707 (2006)ADSCrossRefGoogle Scholar
  6. 6.
    B. Capogrosso-Sansone, C. Trefzger, M. Lewenstein, P. Zoller, G. Pupillo, Phys. Rev. Lett. 104, 125301 (2010)ADSCrossRefGoogle Scholar
  7. 7.
    D. DeMille, Phys. Rev. Lett. 88, 067901 (2002)ADSCrossRefGoogle Scholar
  8. 8.
    A. Micheli, G.K. Brennen, P. Zoller, Nat. Phys. 2, 341 (2006)CrossRefGoogle Scholar
  9. 9.
    H.L. Bethlem, G. Berden, G. Meijer, Phys. Rev. Lett. 83, 1558 (1999)ADSCrossRefGoogle Scholar
  10. 10.
    J.D. Weinstein , R. deCarvalho , T. Guillet, B. Friedrich, J.M. Doyle, Nature 395, 148 (1998)ADSCrossRefGoogle Scholar
  11. 11.
    G. Modugno, G. Ferrari, G. Roati, R.J. Brecha, A. Simoni, M. Inguscio, Science 294, 1320 (2001)ADSCrossRefGoogle Scholar
  12. 12.
    B.K. Stuhl, B.C. Sawyer, D. Wang, J. Ye, Phys. Rev. Lett. 101, 243002 (2008)ADSCrossRefGoogle Scholar
  13. 13.
    E.S. Shuman, J.F. Barry, D. DeMille, Nature 467, 820 (2010)ADSCrossRefGoogle Scholar
  14. 14.
    K.M. Jones, E. Tiesinga, P.D. Lett, P.S. Julienne, Rev. Mod. Phys. 78, 483 (2006)ADSCrossRefGoogle Scholar
  15. 15.
    J.S. Sage, S. Sainis, T. Bergeman, D. DeMille, Phys. Rev. Lett. 94, 203001 (2005)ADSCrossRefGoogle Scholar
  16. 16.
    J. Deiglmayr, A. Grochola, M. Repp, K. Mörtlbauer, C. Glück, J. Lange, O. Dulieu, R. Wester, M. Weidemüller, Phys. Rev. Lett. 101, 133004 (2008)ADSCrossRefGoogle Scholar
  17. 17.
    M. Viteau, A. Chotia, M. Allegrini, N. Bouloufa, O. Dulieu, D. Comparat, P. Pillet, Science 321, 232 (2008)ADSCrossRefGoogle Scholar
  18. 18.
    F. Lang , K. Winkler , C. Strauss , R. Grimm , J. Hecker Denschlag, Phys. Rev. Lett. 101, 133005 (2008)ADSCrossRefGoogle Scholar
  19. 19.
    K.K. Ni , S. Ospelkaus , M.H.G. de Miranda , A. Pe’er , B. Neyenhuis, J.J. Zirbel, S. Kotochigova, P.S. Julienne, D.S. Jin, J. Ye, Science 322, 231 (2008)ADSCrossRefGoogle Scholar
  20. 20.
    J.G. Danzl, E. Haller, M. Gustavsson, M.J. Mark, R. Hart, N. Bouloufa, O. Dulieu, H. Ritsch, H.C. Nägerl, Science 321, 1062 (2008)ADSCrossRefGoogle Scholar
  21. 21.
    J.G. Danzl, M.J. Mark, E. Haller, M. Gustavsson, R. Hart, J. Aldegunde, J.M. Hutson, H.C. Nägerl, Nature Phys. 6, 265 (2010)ADSCrossRefGoogle Scholar
  22. 22.
    T. Köhler, K. Góral, P.S. Julienne, Rev. Mod. Phys. 78, 1311 (2006)ADSCrossRefGoogle Scholar
  23. 23.
    K. Bergmann, H. Theuer, B.W. Shore, Rev. Mod. Phys. 70, 1003 (1998)ADSCrossRefGoogle Scholar
  24. 24.
    P.S. Żuchowski, J.M. Hutson, Phys. Rev. A 81, 060703 (2010)CrossRefGoogle Scholar
  25. 25.
    K. Pilch, A.D. Lange, A. Prantner, G. Kerner, F. Ferlaino, H.C. Nägerl, R. Grimm, Phys. Rev. A 79, 042718 (2009)ADSCrossRefGoogle Scholar
  26. 26.
    G. Delannoy, S.G. Murdoch, V. Boyer, V. Josse, P. Bouyer, A. Aspect, Phys. Rev. A 63, 051602 (2001)ADSCrossRefGoogle Scholar
  27. 27.
    D.L. Jenkin, D.J. McCarron, M.P. Köppinger, H.W. Cho, S.A. Hopkins, S.L. Cornish, Eur. Phys. J. D (2011) DOI: 10.1140/epjd/e2011-10720-5
  28. 28.
    Y.J. Lin, A.R. Perry, R.L. Compton, I.B. Spielman, J.V. Porto, Phys. Rev. A 79, 063631 (2009)ADSCrossRefGoogle Scholar
  29. 29.
    M.L. Harris, P. Tierney, S.L. Cornish, J. Phys. B 41, 035303 (2008)ADSCrossRefGoogle Scholar
  30. 30.
    J.M. Hutson, private communication (2010)Google Scholar
  31. 31.
    A.D. Lercher, T. Takekoshi, M. Debatin, B. Schuster, R. Rameshan, F. Ferlaino, R. Grimm, H.C. Nägerl, Eur. Phys. J. D (2011) DOI: 10.1140/epjd/e2011-20015-6
  32. 32.
    T. Weber, J. Herbig, M. Mark, H.C. Nägerl, R. Grimm, Science 299, 232 (2003)ADSCrossRefGoogle Scholar
  33. 33.
    G. Barontini, C. Weber, F. Rabatti, J. Catani, G. Thalhammer, M. Inguscio, F. Minardi, Phys. Rev. Lett. 103, 043201 (2009)ADSCrossRefGoogle Scholar
  34. 34.
    M. Anderlini, E. Courtade, M. Cristiani, D. Cossart, D. Ciampini, C. Sias, O. Morsch, E. Arimondo, Phys. Rev. A 71, 061401 (2005)ADSCrossRefGoogle Scholar
  35. 35.
    M. Haas, V. Leung, D. Frese, D. Haubrich, S. John, C. Weber, A. Rauschenbeutel, D. Meschede, New J. Phys. 9, 147 (2007)ADSCrossRefGoogle Scholar
  36. 36.
    D.J. McCarron, H.W. Cho, D.L. Jenkin, M.P. Köppinger, S.L. Cornish (2011) arXiv:1102.1576v2Google Scholar
  37. 37.
    C. Chin, R. Grimm, P. Julienne, E. Tiesinga, Rev. Mod. Phys. 82, 1225 (2010)ADSCrossRefGoogle Scholar
  38. 38.
    E. Wille et al., Phys. Rev. Lett. 100, 053201 (2008)ADSCrossRefGoogle Scholar
  39. 39.
    M. Marinescu, H.R. Sadeghpour, Phys. Rev. A 59, 390 (1999)ADSCrossRefGoogle Scholar
  40. 40.
    J. Herbig, T. Kraemer, M. Mark, T. Weber, C. Chin, H.C. Nägerl, R. Grimm, Science 301, 1510 (2003)ADSCrossRefGoogle Scholar
  41. 41.
    V. Vuletić, C. Chin, A.J. Kerman, S. Chu, Phys. Rev. Lett. 83, 943 (1999)ADSCrossRefGoogle Scholar
  42. 42.
    M. Mark, F. Ferlaino, S. Knoop, J.G. Danzl, T. Kraemer, C. Chin, H.C. Nägerl, R. Grimm, Phys. Rev. A 76, 042514 (2007)ADSCrossRefGoogle Scholar
  43. 43.
    W. Stwalley, Eur. Phys. J. D 31, 221 (2004)ADSCrossRefGoogle Scholar
  44. 44.
    P.S. Żuchowski, J.M. Hutson, Phys. Rev. A 81, 060703 (2010)CrossRefGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • H. W. Cho
    • 1
  • D. J. McCarron
    • 1
  • D. L. Jenkin
    • 1
  • M. P. Köppinger
    • 1
  • S. L. Cornish
    • 1
  1. 1.Department of PhysicsDurham University, Rochester Building, Science LaboratoriesDurhamUK

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