Output coupling of a Bose-Einstein condensate formed in a TOP trap

@article{Martn1999OutputCO,
  title={Output coupling of a Bose-Einstein condensate formed in a TOP trap},
  author={J. L. Mart{\'i}n and C. R. McKenzie and N. R. Thomas and John C. Sharpe and D. M. Warrington and Peter Manson and W. J. Sandle and A C Wilson},
  journal={Journal of Physics B},
  year={1999},
  volume={32},
  pages={3065-3075}
}
Two distinct mechanisms are investigated for transferring a pure 87Rb Bose-Einstein condensate in the |F = 2, mF = 2 state into a mixture of condensates in all the mF states within the F = 2 manifold. Some of these condensates remain trapped whilst others are output coupled in the form of an elementary pulsed atom laser. Here we present details of the condensate preparation and results of the two condensate output coupling schemes. The first scheme is a radio-frequency technique which allows… 
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23 Citations

23 Citations

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References

SHOWING 1-10 OF 29 REFERENCES
Output Coupler for Bose-Einstein Condensed Atoms
We have demonstrated an output coupler for Bose condensed atoms in a magnetic trap. Short pulses of rf radiation were used to create Bose condensates in a superposition of trapped and untrapped…
Observation of Interference Between Two Bose Condensates
TLDR
It is demonstrated that Bose condensed atoms are “laser-like”; that is, they are coherent and show long-range correlations and have direct implications for the atom laser and the Josephson effect for atoms.
Dynamical Response of a Bose-Einstein Condensate to a Discontinuous Change in Internal State
A two-photon transition is used to convert an arbitrary fraction of the 87Rb atoms in a |F=1,m_f=-1> condensate to the |F=2,m_f=1> state. Transferring the entire population imposes a discontinuous…
Bosonic stimulation in the formation of a bose-einstein condensate
TLDR
This behavior provided evidence for the process of bosonic stimulation, or coherent matter-wave amplification, crucial to the concept of an atom laser.
Having It Both Ways: Distinguishable Yet Phase-Coherent Mixtures of Bose-Einstein Condensates
We have begun a series of experiments on mixed bosonic quantum fluids. Our system is mixed Bose-Einstein condensates in dilute Rb-87. By simultaneously trapping the atoms in two different hyperfine…
COHERENCE PROPERTIES OF BOSE-EINSTEIN CONDENSATES AND ATOM LASERS
We discuss various aspects of coherence of a Bose-Einstein condensate, and summarize the experimental evidence obtained thus far. It is shown that the mean-field energy of a condensate is a measure…
Collective Excitations of a Bose-Einstein Condensate in a Magnetic Trap.
TLDR
The observation of shape oscillations of a trapped Bose condensate, modes analogous to phonons in homogeneous systems are reported on.
Propagation of Sound in a Bose-Einstein Condensate
Sound propagation has been studied in a magnetically trapped dilute Bose-Einstein condensate. Localized excitations were induced by suddenly modifying the trapping potential using the optical dipole…
Coherence, Correlations, and Collisions: What One Learns about Bose-Einstein Condensates from Their Decay
We have used three-body recombination rates as a sensitive probe of the statistical correlations between atoms in Bose-Einstein condensates (BEC) and in ultracold noncondensed dilute atomic gases. We…
Bose-Einstein condensation of large numbers of atoms in a magnetic time-averaged orbiting potential trap
We have observed Bose-Einstein condensation of large numbers of Rb atoms in a magnetic time-averaged orbiting potential ~TOP! trap. Over 1.5310 atoms are captured in the trap and evaporatively cooled…
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