Measurement of ground-state decoherence via interruption of coherent population trapping Academic Article uri icon


  • We examine the role of ground-state coherence on the fluorescence from the excited state in a three-level system under continuous-wave excitation. When resonantly pumped, the fluorescence is strongly affected by any perturbation in the ground-state coherent population trapping. From our analytical results, we suggest how to use this strong dependence of fluorescence on the ground-state decays as a new method for the measurement of the ground-state decoherence rates. Our calculations should work well for a wide range of systems such as atomic vapors with a buffer gas, active dopants in solids, and quantum dots, etc. We present a proof of principle experiment using Rb87 vapor. 2007 The American Physical Society.

published proceedings


author list (cited authors)

  • Patnaik, A. K., Hsu, P. S., Agarwal, G. S., Welch, G. R., & Scully, M. O.

citation count

  • 10

complete list of authors

  • Patnaik, Anil K||Hsu, Paul S||Agarwal, Girish S||Welch, George R||Scully, Marlan O

publication date

  • February 2007