Sub-Poissonian fluctuations in a 1D Bose gas: from the quantum quasicondensate to the strongly interacting regime.

@article{Jacqmin2011SubPoissonianFI,
  title={Sub-Poissonian fluctuations in a 1D Bose gas: from the quantum quasicondensate to the strongly interacting regime.},
  author={Thibaut Jacqmin and Julien Armijo and Tarik Berrada and K. V. Kheruntsyan and Isabelle Bouchoule},
  journal={Physical review letters},
  year={2011},
  volume={106 23},
  pages={230405}
}
We report on local, in situ measurements of atom number fluctuations in slices of a one-dimensional Bose gas on an atom chip setup. By using current modulation techniques to prevent cloud fragmentation, we are able to probe the crossover from weak to strong interactions. For weak interactions, fluctuations go continuously from super- to sub-Poissonian as the density is increased, which is a signature of the transition between the subregimes where the two-body correlation function is dominated… CONTINUE READING

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