Phonon resonances in atomic currents through Bose-Fermi mixtures in optical lattices

@article{Bruderer2010PhononRI,
  title={Phonon resonances in atomic currents through Bose-Fermi mixtures in optical lattices},
  author={M. Bruderer and T. Johnson and S. R. Clark and D. Jaksch and A. Posazhennikova and W. Belzig},
  journal={Physical Review A},
  year={2010},
  volume={82},
  pages={1-7}
}
We present an analysis of Bose-Fermi mixtures in optical lattices for the case where the lattice potential of the fermions is tilted and the bosons (in the superfluid phase) are described by Bogoliubov phonons. It is shown that the Bogoliubov phonons enable hopping transitions between fermionic Wannier-Stark states; these transitions are accompanied by energy dissipation into the superfluid and result in a net atomic current along the lattice. We derive a general expression for the drift… Expand
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