Single Cs atoms as collisional probes in a large Rb magneto-optical trap

@article{Weber2010SingleCA,
  title={Single Cs atoms as collisional probes in a large Rb magneto-optical trap},
  author={Claudia Weber and Shincy John and Nicolas Spethmann and Dieter Meschede and Artur Widera},
  journal={Physical Review A},
  year={2010},
  volume={82},
  pages={042722}
}
We study cold interspecies collisions of cesium and rubidium in a strongly imbalanced system with single and few Cs atoms. Observation of the single-atom fluorescence dynamics yields insight into light-induced loss mechanisms, while both subsystems can remain in steady state. This significantly simplifies the analysis of the dynamics, as Cs-Cs collisions are effectively absent and the majority component remains unaffected, allowing us to extract a precise value of the Rb-Cs collision parameter… 

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