Exact density matrix for the degenerate-Raman-coupled model in the presence of collisions. Academic Article uri icon


  • Exact expressions are obtained for the density matrix in the operator form and for the quasiprobabilities for the system of an atom undergoing Raman transitions between two degenerate levels on interaction with a quantized field in a lossy cavity driven by an external field. The model is generalized to include the effects of atomic dephasing collisions. The spectral properties of the radiation are discussed, and the equation of motion of the density matrix is derived in the presence of collisions and an external drive. The equation is found to be of second order with respect to time in the absence of the driving field and also analytically solvable. 1992 The American Physical Society.

published proceedings

  • Phys Rev A

author list (cited authors)

  • Puri, R. R., & Agarwal, G. S.

citation count

  • 14

complete list of authors

  • Puri, RR||Agarwal, GS

publication date

  • April 1992