Control-laser-induced subnatural linewidths and quenching of spontaneous emission. Academic Article uri icon


  • We show how control lasers lead to subnatural linewidths in spontaneous emission as well as to the quenching of the quantum noise. We trace this quenching to the dispersive contributions to the line shape. We obtain analytical expressions for linewidths that for [Formula Presented] systems are half the natural linewidths with the possibility of much more reduction for detuned control laser. We further present a simple physical analysis in terms of a two-photon Fermi golden rule to understand cancellation of spontaneous emission. Finally, we relate our results to recent experiments. 1996 The American Physical Society.

published proceedings

  • Phys Rev A

author list (cited authors)

  • Agarwal, G. S.

citation count

  • 37

complete list of authors

  • Agarwal, GS

publication date

  • November 1996