@article{CTT100717867,
  author = {R. Inoue and T. Yonehara and Y. Miyamoto and M. Koashi and M. Kozuma},
  title = {Measuring Qutrit-Qutrit Entanglement of Orbital Angular Momentum States of an Atomic Ensemble and a Photon},
  journal = {PHYSICAL REVIEW LETTERS},
  year = 2009,
}

@article{CTT100717878,
  author = {R. Inoue and N. Kanai and T. Yonehara and Y. Miyamoto and M. Koashi and M. Kozuma},
  title = {Entanglement of orbital angular momentum states between an ensemble of cold atoms and a photon},
  journal = {Physical Review A},
  year = 2006,
}