Effect of Dimple Potential on Ultraslow Light in a Bose-Einstein   Condensate
  We investigate the propagation of ultraslow optical pulse in atomic Bose-Einstein condensate in a harmonic trap decorated with a dimple potential. The role of dimple potential on the group velocity and time delay is studied. Since we consider the interatomic scattering interactions nonlinear Schrodinger equation or Gross-Pitaevskii equation is used in order to get the density profile of the atomic system. We find large group delays of order 1 msec in an atomic Bose-Einstein condensate in a harmonic trap with a deep dimple potential. 
Devrim Tarhan, Haydar Uncu
cond-mat.quant-gas physics.atom-ph physics.optics quant-ph