Applied Physics B

, Volume 96, Issue 2–3, pp 271–274 | Cite as

Quadrupole oscillations in a quantum degenerate Bose–Fermi mixture



We study the collective dynamics in a degenerate Bose–Fermi mixture of 174Yb and 173Yb atoms. We excite collective oscillations by a sudden reduction of the trapping confinement and observe low m=0 quadrupole oscillations of condensates in 174Yb. First the oscillations in 174Yb atoms alone are investigated, and they are well described by the time-dependent Gross–Pitaevskii equation in the Thomas–Fermi approximation. Using the same procedure the quadrupole oscillations are excited for a 174Yb–173Yb Bose–Fermi mixture. In comparing data taken with and without fermionic 173Yb atoms, the oscillation frequency of the quadrupole mode in the condensate decreases with the presence of 173Yb atoms.


03.75.Kk 67.85.De 67.85.Pq 


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Department of Physics, Graduate School of ScienceKyoto UniversityKyotoJapan
  2. 2.CREST, Japan Science and Technology AgencyKawaguchiJapan

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