Tuning the scattering length with an optically induced Feshbach resonance.

@article{Theis2004TuningTS,
  title={Tuning the scattering length with an optically induced Feshbach resonance.},
  author={Marius Theis and Gregor Thalhammer and Kenneth Winkler and Martin Hellwig and Gregory Ruff and Rudolf Grimm and J. Hecker Denschlag},
  journal={Physical review letters},
  year={2004},
  volume={93 12},
  pages={
          123001
        }
}
We demonstrate optical tuning of the scattering length in a Bose-Einstein condensate as predicted by Fedichev et al. [Phys. Rev. Lett. 77, 2913 (1996)]. In our experiment, atoms in a 87Rb condensate are exposed to laser light which is tuned close to the transition frequency to an excited molecular state. By controlling the power and detuning of the laser beam we can change the atomic scattering length over a wide range. In view of laser-driven atomic losses, we use Bragg spectroscopy as a fast… CONTINUE READING

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