Corpus ID: 118888743

Freezing Light via hot gases

  title={Freezing Light via hot gases},
  author={O. Kocharovskaya and Y. Rostovtsev and M. Scully},
We prove that it is possible to freeze a light pulse (i.e., to bring it to a full stop) or even to make its group velocity negative in a coherently driven Doppler broadened atomic medium via electromagnetically induced transparency (EIT). This remarkable phenomenon of the ultra-slow EIT polariton is based on the spatial dispersion of the refraction index $n(\w,k)$, i.e., its wavenumber dependence, which is due to atomic motion and provides a negative contribution to the group velocity. This is… Expand