Abstract
Electromagnetically induced transparency may lead to suppression of two-photon absorption in a four-level atomic system. This phenomenon is manifested by destructive quantum interference among multiple excitation paths created by a coherent coupling field. We report an experimental observation of such suppression of two-photon absorption in cold atoms.
- Received 19 March 2001
DOI:https://doi.org/10.1103/PhysRevA.64.043807
©2001 American Physical Society